What is EnerPhit? 

“Your home is your biggest investment—but is it working against you?”

If your house is expensive to heat, cold in winter, too hot in summer, or prone to draughts and damp, then it’s losing energy—and costing you money.

You’re not alone. Most UK homes were never designed for energy efficiency, and with rising energy prices, homeowners are now looking for ways to cut costs, increase comfort, and future-proof their properties.

But what if you could upgrade your existing home to near PassivHaus standards—without knocking it down and rebuilding?

Meet EnerPhit: The Gold Standard for Energy-Efficient Retrofits

EnerPhit is the PassivHaus retrofit standard, designed to bring older homes as close as possible to PassivHaus performance. It’s a proven way to slash heating bills, eliminate draughts, and create a home that stays warm in winter and cool in summer—all while maintaining the charm and character of your existing property.

At Lynch Brother Homes, we specialise in high-performance EnerPhit retrofits in Oxford, helping homeowners transform inefficient houses into ultra-efficient, future-proofed homes.

In this guide, we’ll cover:

✅ What EnerPhit is and why it matters
✅ How it works to make older homes ultra-efficient
✅ How much energy (and money) you can save
✅ The certification process—what’s involved?
✅ Why Lynch Brother Homes is Oxford’s leading EnerPhit specialist

💡 Did you know? The UK has over 28 million homes, and 80% of them will still be in use by 2050. That means retrofitting is essential for achieving the country’s net-zero carbon goals.

FAQ: Everything You Need to Know About EnerPhit

• What does EnerPhit mean?
  → EnerPhit is short for “Energy Retrofit with PassivHaus Principles”—the most advanced energy-efficient standard for upgrading existing homes.
• How much energy can I save with EnerPhit?
  → EnerPhit homes can reduce heating demand by up to 75%, meaning significantly lower energy bills.
• Is EnerPhit suitable for my home?
  → Almost any home can be upgraded using EnerPhit principles—even Victorian, Edwardian, and listed buildings.
• How is EnerPhit different from PassivHaus?
  → PassivHaus is designed for new builds, while EnerPhit adapts existing buildings to be as efficient as possible.

Next: What is EnerPhit and How Does It Work?

Now that you understand the importance of energy-efficient retrofits, let’s dive into what makes EnerPhit so effective—and why it’s the smartest way to upgrade your home.

 

What is EnerPhit and How Does It Work?

“What if your home could be 75% more energy efficient—without losing its character?”

Most homes in the UK leak heat like a sieve—thin walls, old windows, and draughty gaps mean that every time you turn on the heating, much of that warmth escapes outside.

This is where EnerPhit comes in.

EnerPhit is the PassivHaus Institute’s official standard for retrofitting older buildings. It allows existing homes to achieve near PassivHaus efficiency by applying advanced insulation, airtightness, and ventilation strategies—without the need for a complete rebuild.

The result?
✅ Dramatically lower energy bills—up to 75% less heating required.
✅ A warm, comfortable home—year-round.
✅ No more draughts, condensation, or damp issues.
✅ Better air quality—cleaner, fresher indoor air.
✅ Increased property value—future-proofing against rising energy prices.

At Lynch Brother Homes, we specialise in EnerPhit retrofits in Oxford, transforming inefficient homes into ultra-comfortable, low-energy spaces.

How EnerPhit Works: The 5 Key Principles

EnerPhit follows the same core principles as PassivHaus, but with flexibility for existing buildings. Here’s how it works:

1. Super Insulation 

Traditional homes lose up to 35% of their heat through walls and roofs. EnerPhit wraps your home in a thermal envelope, reducing heat loss and keeping temperatures stable.

🔹 Options include:

• External insulation—ideal for homes with cavity walls.
• Internal insulation—preserves the external façade (great for listed buildings).
• Roof & floor insulation—eliminates cold spots and heat escape.

💡 Case Study: A 1930s Oxford home retrofitted with EnerPhit reduced its heating demand by 70% just by improving insulation.

2. Airtight Construction 

Even a small gap in your home’s structure can let out enough warm air to heat an entire room.

EnerPhit seals all cracks, joints, and weak points, ensuring that heat stays inside where it belongs.

✅ Draught-free living—no more cold air sneaking in.
✅ More control over indoor temperatures—warm in winter, cool in summer.
✅ Eliminates damp & mould issues—better indoor air quality.

💡 Fact: A traditional UK home has an air leakage rate of up to 10 ACH (air changes per hour). EnerPhit reduces this to 1.0 ACH, meaning a much more stable and comfortable indoor climate.

3. Thermal Bridge Reduction 

Thermal bridges are weak spots in your home’s structure where heat escapes—commonly found around windows, doors, and corners.

EnerPhit minimises these weak spots by:
✅ Using insulated window frames & sills.
✅ Wrapping insulation around problem areas.
✅ Designing a continuous thermal envelope.

💡 Example: In one Oxford retrofit, upgrading window frames alone reduced heat loss by 25%.

4. High-Performance Windows & Doors 

Most UK homes lose up to 40% of their heat through windows and doors.

EnerPhit homes use triple-glazed, airtight windows and highly insulated doors to retain warmth while maximising natural light.

✅ No more cold draughts near windows.
✅ Noise reduction—triple glazing makes homes quieter.
✅ Prevents overheating in summer—keeps the house cool.

💡 Bonus Benefit: High-performance windows eliminate condensation, preventing damp and mould issues common in older homes.

5. Mechanical Ventilation with Heat Recovery (MVHR) 

The biggest misconception about airtight homes? That they feel stuffy.

In reality, EnerPhit homes have better air quality than traditional homes, thanks to MVHR (Mechanical Ventilation with Heat Recovery).

✅ Fresh, filtered air 24/7—without losing heat.
✅ Filters out dust, pollen, and pollutants—perfect for allergy sufferers.
✅ Eliminates condensation, preventing mould and damp.

💡 Fact: MVHR recovers at least 75% of the heat from outgoing air, meaning almost no warmth is wasted.

FAQ: How EnerPhit Works

• Do I have to replace my windows for EnerPhit?
  → Yes, upgrading to high-performance glazing is essential to retain heat.
• Can an EnerPhit retrofit be done in stages?
  → Yes! Many homeowners upgrade insulation first, then windows, then ventilation.
• Will my home feel too airtight?
  → No! MVHR ensures constant fresh air, so your home feels fresher than ever.
• Can I still have an open fireplace?
  → Not recommended—airtight homes perform best without traditional chimneys.

Next: How Much Can You Save with an EnerPhit Retrofit?

Now that we’ve covered how EnerPhit works, let’s break down the real-world cost savings and return on investment.

 

How Much Can You Save with an EnerPhit Retrofit?

“What if your heating bills dropped by 75%—every year, forever?”

Most UK homeowners are feeling the squeeze of rising energy prices, with heating bills soaring past £2,000 per year for many households. But what if you could slash your heating costs by up to 75%—permanently?

That’s the power of EnerPhit.

By optimising insulation, airtightness, and ventilation, an EnerPhit retrofit drastically reduces energy waste, meaning your home stays warm in winter, cool in summer, and costs next to nothing to run.

At Lynch Brother Homes, we help homeowners in Oxford future-proof their homes with EnerPhit, ensuring long-term savings, comfort, and energy security.

EnerPhit vs. Traditional Homes: The Cost Breakdown

Feature	Traditional UK Home	EnerPhit Retrofit Home
Annual Heating Bill	£1,500 – £2,500	£300 – £600
Annual Energy Use	100-150 kWh/m²	25-50 kWh/m²
Air Leakage Rate	10 ACH (high heat loss)	1.0 ACH (minimal heat loss)
Thermal Comfort	Cold in winter, overheating in summer	Stable, comfortable temperature all year
Property Resale Value	Standard	Higher due to energy efficiency

💡 Fact: A standard UK home requires 100-150 kWh/m² of heating energy per year—an EnerPhit home needs just 25-50 kWh/m².

Real-World Savings: How Much Will You Save?

Scenario 1: A Standard 3-Bedroom Home

Before EnerPhit Retrofit:

• Heating bill: £2,000 per year
• Heat loss: Over 50% of generated heat escapes
• Draughts & cold spots: Common in winter

After EnerPhit Retrofit:

• Heating bill: £400-£600 per year
• Heat loss: Reduced by 75%
• Draughts & cold spots: Eliminated

✅ Total savings over 20 years: £25,000 – £30,000.

Scenario 2: A Period Home in Oxford (EnerPhit Case Study)

A Victorian home in Oxford underwent an EnerPhit retrofit, including:
✔ External insulation (to retain heat)
✔ Triple-glazed sash windows (to maintain period character)
✔ MVHR system (for continuous fresh air)

🔹 Before: Annual heating bill £2,400
🔹 After: Annual heating bill £600
🔹 Total savings over 20 years: £36,000

💡 Bonus Benefit: A well-executed EnerPhit retrofit increases home value by making properties more attractive to eco-conscious buyers.

EnerPhit vs. Other Retrofit Options: What’s the Best Investment?

Upgrade Option	Energy Savings (%)	Cost Estimate	Payback Time
EnerPhit Retrofit	60-75%	£40,000 – £80,000	10-15 years
Cavity Wall Insulation	10-15%	£1,000 – £3,000	3-5 years
Loft Insulation	10-20%	£500 – £2,000	2-4 years
Solar Panels	20-40%	£5,000 – £10,000	8-12 years
Double Glazing	10-20%	£3,000 – £10,000	15-20 years

💡 Key Takeaway: While smaller upgrades offer some savings, an EnerPhit retrofit is the only way to achieve PassivHaus-level efficiency—making your home drastically cheaper to run in the long term.

Will EnerPhit Pay for Itself?

Yes! While EnerPhit retrofits require an upfront investment, they pay for themselves through energy savings, reduced maintenance, and increased property value.

✅ Lower energy bills—Immediate savings start from the first winter.
✅ More predictable heating costs—No surprises from rising energy prices.
✅ Higher resale value—Buyers pay more for energy-efficient homes.

💡 Example: If you save £1,500 per year, your EnerPhit retrofit could pay for itself in 10-12 years—while increasing comfort and home value.

FAQ: EnerPhit Costs & Savings

• How much does an EnerPhit retrofit cost?
  → Costs range from £40,000 – £80,000, depending on property size and retrofit scope.
• What is the payback time on an EnerPhit retrofit?
  → Typically 10-15 years, but faster with rising energy costs.
• Is there financial support for EnerPhit retrofits?
  → Some government grants and green mortgage incentives are available.
• Does EnerPhit increase home value?
  → Yes! Energy-efficient homes sell faster and for more money.

Next: The EnerPhit Certification Process – What’s Involved?

Now that we’ve broken down the financial benefits, let’s look at what’s required to achieve EnerPhit certification—and why it matters.

 

The EnerPhit Certification Process – What’s Involved?

“What does it take to officially certify an energy-efficient home?”

EnerPhit isn’t just about adding insulation and upgrading windows—it’s a precise standard that ensures your home meets world-class energy efficiency targets.

If you want to guarantee maximum savings, comfort, and future-proofing, EnerPhit certification is the gold standard.

At Lynch Brother Homes, we handle the entire certification process, ensuring your home meets all the criteria for EnerPhit accreditation—giving you a validated, high-performance home with the official PassivHaus Institute seal of approval.

1. What is EnerPhit Certification?

EnerPhit certification is an official recognition that a building has been retrofitted to near PassivHaus efficiency levels, reducing energy demand by up to 75%.

✅ Independently tested & verified—no guesswork, just proven results.
✅ Ensures your home meets top-tier energy standards.
✅ Future-proofs your home against new energy efficiency laws.
✅ Increases property value—certified homes sell faster & for more.

💡 Fact: In some European countries, EnerPhit-certified homes qualify for lower mortgage rates & energy incentives due to their ultra-low energy consumption.

2. What Are the EnerPhit Certification Criteria?

To achieve certification, your home must meet strict energy efficiency targets in five key areas:

1. Heating Demand 

• Your home must use no more than 25-50 kWh/m² per year for heating.
• This is 75% lower than the UK average home.

2. Airtightness 

• Must achieve an air leakage rate of 1.0 ACH or lower (compared to 10 ACH in standard homes).
• Blower door tests ensure minimal heat loss.

3. Thermal Bridge Reduction 

• Weak spots where heat escapes must be minimised (e.g., around windows, doors, and junctions).

4. High-Performance Windows & Doors 

• Triple glazing and airtight doors required to retain warmth & prevent overheating.

5. Mechanical Ventilation with Heat Recovery (MVHR) 

• MVHR must recover at least 75% of the heat from outgoing air, reducing wasted energy.

💡 Key Insight: Even if your home can’t fully meet PassivHaus standards, EnerPhit allows some flexibility—while still achieving dramatic energy savings.

3. The Step-by-Step Certification Process

At Lynch Brother Homes, we handle the entire EnerPhit certification process—ensuring your retrofit meets all necessary standards.

Step 1: Initial Energy Assessment & Feasibility Study

🔹 PHPP (PassivHaus Planning Package) modelling is used to assess your home’s energy performance.
🔹 We identify key weaknesses—heat loss, draughts, inefficient windows.
🔹 Tailored retrofit plan developed to meet EnerPhit standards.

✅ Outcome: A clear roadmap for your high-performance retrofit.

Step 2: Design & Planning for Maximum Efficiency

🔹 Custom insulation strategies developed (internal vs. external insulation, breathable materials for period homes).
🔹 Optimised window & door selection for minimal heat loss.
🔹 MVHR ventilation system designed for continuous fresh air & heat recovery.

✅ Outcome: A blueprint for optimal energy performance.

Step 3: Construction & Implementation

🔹 Installation of high-performance insulation (walls, roof, floor).
🔹 Airtightness measures applied to eliminate draughts.
🔹 New triple-glazed windows & insulated doors installed.
🔹 MVHR system fitted & optimised for maximum efficiency.

✅ Outcome: A transformed, ultra-efficient home that’s warm, comfortable & low-cost to run.

Step 4: Final Testing & Certification Approval

🔹 Blower door test conducted to check airtightness.
🔹 Energy efficiency confirmed through performance testing.
🔹 Submission to the PassivHaus Institute for official certification.

✅ Outcome: Your home is now officially EnerPhit-certified—with proven, measurable energy savings.

💡 Example: A homeowner in Oxford cut heating demand from 200 kWh/m² to just 45 kWh/m²—achieving EnerPhit certification & a 75% reduction in energy bills.

4. How Long Does EnerPhit Certification Take?

Stage	Timeframe
Energy Assessment & Planning	2-3 months
Construction & Retrofit Work	6-12 months
Testing & Certification Approval	1-2 months

💡 Total estimated time for certification: 12-18 months.

5. Do You Need EnerPhit Certification? (Or Can You Retrofit Without It?)

Some homeowners use EnerPhit principles without going through full certification—but certification has key advantages:

✅ Why Get Certified?

✔ Guaranteed Performance—Independently tested & verified energy savings.
✔ Higher Property Value—Buyers prefer certified homes.
✔ Potential Mortgage & Incentive Benefits—Some banks offer lower rates for certified homes.
✔ Compliance with Future Regulations—Energy standards are getting stricter—EnerPhit ensures you’re ahead of the curve.

⚠️ When Might Certification Not Be Necessary?

❌ If you’re only making partial upgrades (e.g., just insulation or windows).
❌ If budget is limited, but you still want to follow EnerPhit principles.

💡 Our Recommendation: If you plan to sell your home in the future, EnerPhit certification makes your property more attractive to buyers—ensuring a better resale price.

FAQ: EnerPhit Certification

• Do I need full certification, or can I follow EnerPhit principles without it?
  → Certification guarantees maximum efficiency & property value, but we can also retrofit using EnerPhit methods without certification.
• How much does EnerPhit certification cost?
  → Typically £3,000 – £8,000, depending on project size.
• Does Lynch Brother Homes handle the certification process?
  → Yes! We manage everything from design to final approval.
• Can I get a mortgage discount for an EnerPhit home?
  → Some lenders offer green mortgages for ultra-efficient homes.

Next: Common Myths & Misconceptions About EnerPhit

Now that you understand how EnerPhit certification works, let’s bust some common myths—because there’s a lot of misinformation out there!

 

Common Myths & Misconceptions About EnerPhit

“Is EnerPhit really worth it? Or is it just another ‘green’ trend?”

There’s a lot of misinformation surrounding EnerPhit, and many homeowners wonder if it’s too expensive, too complicated, or unnecessary for their home.

The truth? EnerPhit is one of the smartest home upgrades you can make—but myths often stop people from taking action.

Let’s bust the biggest misconceptions and show you why EnerPhit is the best retrofit solution for long-term savings, comfort, and energy efficiency.

1. “EnerPhit is Just for Modern Homes” ❌

The Reality: EnerPhit works for ALL home types—even period properties.

Some believe that older buildings (Victorian, Edwardian, or listed homes) can’t be retrofitted to EnerPhit standards. In reality:

✅ EnerPhit is designed for existing homes—including historic buildings.
✅ Retrofitting solutions are flexible, working with solid walls, old windows, and period features.
✅ Listed buildings can still be upgraded using breathable, traditional materials.

💡 Example: A Victorian terrace in Oxford was retrofitted to EnerPhit levels, reducing heating demand by 70% while preserving its historic character.

FAQ: Period Homes & EnerPhit

• Can EnerPhit work in a listed building?
  → Yes! We use sensitive, breathable materials to improve efficiency while preserving character.
• Do I have to replace original windows?
  → Not always—secondary glazing or triple-glazed sash windows can be used instead.
• Will retrofitting ruin my home’s aesthetics?
  → No! Upgrades are designed to blend seamlessly with period homes.

2. “EnerPhit Costs Too Much” ❌

The Reality: While EnerPhit is an investment, it pays for itself in energy savings.

Some homeowners assume EnerPhit is too expensive, but when you look at the lifetime savings, the numbers speak for themselves:

Home Type	Annual Heating Bill (Before)	Annual Heating Bill (After EnerPhit)	Savings Over 20 Years
Standard UK Home	£2,000+	£400 – £600	£25,000 – £30,000
Victorian Home (Oxford)	£2,400+	£600	£36,000+

✅ EnerPhit reduces energy costs by up to 75%.
✅ Homes with energy efficiency sell for more—buyers prioritise lower running costs.
✅ Green mortgages & government incentives can help offset the cost.

💡 Key Insight: A well-planned EnerPhit retrofit pays for itself in ~10-15 years—after that, you’re saving thousands every year.

FAQ: EnerPhit Costs & Payback

• How much does an EnerPhit retrofit cost?
  → Typically £40,000 – £80,000, depending on the home.
• Is EnerPhit worth it for a home I plan to sell?
  → Yes! Certified energy-efficient homes sell faster and for higher prices.
• Can I do an EnerPhit retrofit in stages?
  → Yes! Many homeowners start with insulation & windows, then add MVHR later.

3. “EnerPhit Homes Are Too Airtight & Feel Stuffy” ❌

The Reality: PassivHaus ventilation systems make EnerPhit homes feel fresher than standard homes.

Some people think an airtight home = no fresh air, but in reality:

✅ EnerPhit homes have constant, filtered fresh air—thanks to MVHR (Mechanical Ventilation with Heat Recovery).
✅ No condensation, damp, or stale air—MVHR removes excess moisture & pollutants.
✅ No need to open windows for ventilation (but you still can!).

💡 Key Benefit: MVHR filters out pollen, dust, and pollutants—making EnerPhit homes ideal for allergy sufferers.

FAQ: EnerPhit & Air Quality

• Will my home feel too airtight?
  → No! MVHR ensures constant airflow, so your home always feels fresh.
• Do I still need to open windows?
  → You can, but you won’t need to—MVHR provides fresh air automatically.
• Does MVHR use a lot of electricity?
  → No—it saves more energy than it uses by recovering 75-90% of outgoing heat.

4. “EnerPhit Takes Too Long & Is Too Disruptive” ❌

The Reality: Most EnerPhit retrofits take ~6-12 months and can be phased.

Some homeowners worry that EnerPhit will take years to complete. The truth?

✅ Most full retrofits take 6-12 months, depending on the home’s size & complexity.
✅ Retrofits can be done in phases—allowing you to spread the cost.
✅ We minimise disruption by working efficiently and planning each stage carefully.

💡 Example: A 4-bedroom home in Oxford was EnerPhit-retrofitted in phases over 18 months, reducing bills by £1,800 per year.

FAQ: EnerPhit Timeline & Disruption

• How long does an EnerPhit retrofit take?
  → A full retrofit typically 6-12 months, but can be phased over years.
• Can I still live in my home during the retrofit?
  → Yes! We work room by room to minimise disruption.
• What’s the first step in planning an EnerPhit retrofit?
  → A home energy assessment—we identify key upgrades & develop a step-by-step plan.

5. “EnerPhit Won’t Work in the UK’s Damp Climate” ❌

The Reality: EnerPhit homes are actually BETTER at preventing damp & condensation.

UK homes often suffer from damp, condensation, and mould, especially in older buildings. EnerPhit solves these problems by:

✅ Airtight construction stops damp penetration.
✅ MVHR removes excess moisture from the air.
✅ Proper insulation eliminates cold spots where condensation forms.

💡 Fact: A properly retrofitted EnerPhit home has NO condensation, NO damp, and NO mould issues—ever.

FAQ: EnerPhit & Damp Prevention

• Will EnerPhit make my home too dry?
  → No—MVHR maintains optimal humidity levels (not too dry, not too damp).
• Does airtightness cause condensation?
  → No—poor ventilation causes condensation. MVHR eliminates this issue.
• Can EnerPhit help with existing damp problems?
  → Yes! It eliminates the root causes (cold spots, moisture buildup, poor ventilation).

Next: Why Choose Lynch Brother Homes for Your EnerPhit Retrofit?

Now that we’ve debunked the biggest EnerPhit myths, let’s talk about how to bring your retrofit to life—and why Lynch Brother Homes is the expert you need.

 

Why Choose Lynch Brother Homes for Your EnerPhit Retrofit?

“EnerPhit is only as good as the builder who delivers it.”

Retrofitting a home to EnerPhit standards requires specialist knowledge, precision, and experience.
Many builders understand insulation and double glazing—but very few have the expertise to combine airtightness, thermal bridging, and MVHR into a fully optimised, ultra-efficient home.

That’s where Lynch Brother Homes comes in.

We are Oxford’s leading EnerPhit retrofit specialists, helping homeowners transform their properties into high-performance, low-energy homes. Our team is trained in PassivHaus principles, and we’ve successfully completed numerous energy-efficient retrofits—ensuring homes stay warm, comfortable, and low-cost to run.

1. We Are Specialists in EnerPhit & PassivHaus Construction

✅ Most builders retrofit homes—but not to EnerPhit standards.
✅ We work with PassivHaus-certified consultants, architects, and engineers.
✅ We understand the science of energy efficiency—not just the materials.

EnerPhit is not just about adding more insulation—it’s about integrating multiple building performance factors to create a perfectly balanced home.

💡 Fact: Even a tiny error in airtightness or thermal bridging can compromise the entire retrofit, reducing efficiency and increasing running costs. That’s why you need an expert.

FAQ: Why Choose a Specialist EnerPhit Builder?

• Can any builder retrofit a home?
  → Not to EnerPhit standards—specialist knowledge is required.
• Do you need a PassivHaus-certified builder for EnerPhit?
  → Not legally, but using a builder with PassivHaus experience ensures success.
• How do I know if a builder understands EnerPhit?
  → Ask about airtightness, PHPP energy modelling, and MVHR systems.

2. We Handle the Entire Process

✅ Many builders only handle construction—we manage the full EnerPhit journey.
✅ We work with specialist architects, energy consultants & certifiers.
✅ We ensure your home meets all EnerPhit criteria—guaranteeing top performance.

A successful EnerPhit retrofit requires precise planning, and we manage everything from initial assessment to final certification.

🔹 Step 1: Home energy assessment & PHPP modelling.
🔹 Step 2: Bespoke retrofit design via specialist architects & in-house planning.
🔹 Step 3: High-performance insulation, airtightness & window upgrades.
🔹 Step 4: MVHR system installation & final testing.
🔹 Step 5: Official EnerPhit certification.

✅ Outcome: A certified, ultra-efficient home that costs less to run and is more comfortable to live in.

💡 Bonus Benefit: Having a certified EnerPhit home can increase resale value, as buyers prioritise energy-efficient properties.

FAQ: What Does Full-Service EnerPhit Retrofitting Involve?

• Do I need to hire separate designers & engineers for an EnerPhit retrofit?
  → No! We provide a complete start-to-finish service, handling everything for you.
• Can I phase my retrofit over time?
  → Yes! We can break the project into stages to fit your budget & schedule.
• Do you offer post-retrofit support?
  → Yes! We ensure your home continues to perform efficiently after the retrofit.

3. We Optimise for Cost-Effectiveness—Saving You Money

✅ We manage the retrofits project journey for maximum return on investment.
✅ We help you access grants, green mortgages & tax incentives.
✅ We balance upfront costs with long-term energy savings.

EnerPhit vs. Traditional Home Running Costs

Home Type	Annual Heating Bill (Before)	Annual Heating Bill (After EnerPhit)	20-Year Savings
Standard UK Home	£2,000+	£400 – £600	£25,000 – £30,000
Period Home (Oxford)	£2,400+	£600	£36,000+

How do we keep costs under control?
🔹 Smart material selection—balancing performance & cost.
🔹 Phased retrofit planning—spreading costs over time.
🔹 Leveraging incentives & grants—lowering upfront investment.

💡 Key Insight: EnerPhit homes hold their value better than standard homes, making them a smart investment for future resale.

FAQ: Cost-Effectiveness of EnerPhit

• Is EnerPhit too expensive for my home?
  → It’s an investment, but the savings outweigh the cost over time.
• Do you offer phased retrofits?
  → Yes! We can break the project into smaller upgrades.
• Can I get funding or incentives for EnerPhit?
  → Some grants & green mortgages are available—we help identify options.

4. We Customise Retrofits for Every Home Type

✅ EnerPhit works for all home types—even period & listed buildings.
✅ We use breathable materials for older homes to prevent damp & structural issues.
✅ We blend energy efficiency with beautiful aesthetic—no ugly retrofits!

Some builders use a one-size-fits-all approach, but we tailor every retrofit to preserve your home’s unique character while maximising efficiency.

💡 Case Study: A 1900s Oxford townhouse was EnerPhit-retrofitted while maintaining its original façade, reducing heating demand by 70% without compromising aesthetics.

FAQ: Custom EnerPhit Retrofits

• Can EnerPhit work in a listed building?
  → Yes! We use sensitive, conservation-approved methods.
• Will my home look different after a retrofit?
  → No! We integrate upgrades subtly, maintaining your home’s original charm.
• Do I have to replace all my windows?
  → Not always! We explore secondary glazing & high-performance window solutions.

5. Our Clients Trust Us—And You Can Too

We’ve helped homeowners across Oxfordshire achieve EnerPhit-level efficiency, creating warmer, healthier, and more cost-effective homes.

What Our Clients Say:

“We recently had the pleasure of working with the Lynch Brothers… From the very start, they demonstrated a high level of professionalism and expertise.”
– John Palmer, Oxfordshire

“John and Henry have done a couple of major projects for me… I’ve been really happy with the high standard of the work. They’re also great to work with, always easy to get in touch with and clear with estimates and timeframes.”
– Thom Schutt, Cotswolds

Ready to Retrofit? Let’s Talk.

EnerPhit is a smart investment, but only if done right.

At Lynch Brother Homes, we combine technical expertise, local knowledge, and a passion for sustainable construction to deliver best-in-class EnerPhit retrofits in Oxford.

Book a Free Consultation Today
Let’s discuss your project and explore how we can help bring your EnerPhit vision to life.

📞 Call us: 01865 420063
📩 Email us: [email protected]
🌍 Visit us online: https://www.lynchbrotherhomes.co.uk/