Window Replacement Finance UK: Novuna, Ideal4Finance and FCA-Aware Borrowing

The average full-house window replacement in the UK costs £7,000-£12,000. Roughly 35% of homeowners finance that cost rather than paying from savings. The finance products available range from 0% interest dealer promotions to secured loans at 15%+ APR. The difference between the cheapest and most expensive route on a £10,000 replacement can be over £4,000 in total interest.

The three finance routes

Route 1: Dealer-arranged finance (0% or low-rate)

Many national window companies (Anglian, Everest, Safestyle) offer interest-free or low-interest credit on installations. These are typically hire purchase agreements underwritten by a third-party lender.

How it works:

• The window company sells you the installation
• The finance company pays the window company upfront
• You repay the finance company in monthly instalments
• The agreement is regulated by the FCA

Typical terms:

Type	APR	Term	Monthly payment on £10,000	Total cost
0% interest	0%	12 months	£833	£10,000
0% interest	0%	24 months	£417	£10,000
Low-rate	4.9%	60 months	£188	£11,280
Standard rate	9.9%	60 months	£210	£12,600

The 0% deals are genuine — the window company subsidises the interest to win your business. The catch is that 0% deals are usually only available on the company’s own products at their own prices, which tend to be 20-40% higher than independent installers. A £10,000 quote from a national company at 0% APR may be equivalent to a £7,500 quote from an independent installer paid in cash.

Route 2: Personal loan (unsecured)

A personal loan from a bank or building society is the most straightforward way to finance a window replacement if you do not qualify for dealer finance or prefer to use an independent installer.

Typical terms:

Loan amount	Typical APR	Term	Monthly payment	Total cost
£5,000	6-8%	36 months	£152-£156	£5,480-£5,625
£10,000	5-7%	60 months	£188-£197	£11,280-£11,820
£15,000	5-7%	84 months	£216-£225	£18,144-£18,900
£20,000	4.5-6%	120 months	£208-£221	£24,960-£26,520

The APR you receive depends on your credit score. The “representative APR” advertised by lenders is offered to only 51% of successful applicants. If your credit file shows missed payments or high utilisation on existing credit, the actual APR could be 12-15%.

Route 3: Specialist home improvement finance

Two providers dominate the UK home improvement finance market:

Novuna (formerly Hitachi Capital)

Novuna provides point-of-sale finance through a network of home improvement retailers. For window installations, they offer:

• Interest-bearing loans: 7.9-14.9% APR representative
• Interest-free periods: 12 or 24 months (subsidised by the retailer)
• Loan terms: 12-120 months
• Maximum loan: £25,000 (unsecured)
• Decision time: Typically within 1 hour

Novuna is FCA-authorised (firm reference number 704348) and a member of the Finance & Leasing Association (FLA). Their agreements include a 14-day cooling-off period and Section 75 protection under the Consumer Credit Act 1974.

Ideal4Finance

Ideal4Finance acts as a credit broker, connecting homeowners with a panel of lenders. Their terms:

• APR range: 6.9-18.9% depending on the lender and your credit score
• Loan terms: 12-120 months
• Maximum loan: £50,000 (unsecured)
• Panel of lenders: Includes Shawbrook, Together Money, and Oplo

Ideal4Finance is also FCA-authorised (firm reference number 795385). As a broker, they receive commission from the lender — you should ask for the commission disclosure before signing.

FCA protections: what you need to know

All consumer credit agreements for window replacements in the UK are regulated by the Financial Conduct Authority. This provides several protections:

Section 75 of the Consumer Credit Act 1974

If you pay for windows (or any single item) costing between £100 and £30,020 using a credit card or hire purchase agreement, the credit provider is jointly liable with the retailer if something goes wrong. If the window company goes bust before completing the installation, you can claim the money back from the finance company.

This protection only applies to credit agreements regulated by the FCA. A loan from a family member, or an unregulated agreement, does not carry Section 75 protection.

The 14-day cooling-off period

You have 14 calendar days from signing the credit agreement to cancel it without penalty. This applies even if the installation has already started — though you would then owe the window company the full amount in cash.

Affordability checks

The FCA requires lenders to perform “reasonable and proportionate” affordability checks before lending. If a lender approves a £15,000 loan without checking your income and outgoings, the agreement may be unfair. If you later struggle to repay, you can complain to the Financial Ombudsman that the affordability check was inadequate.

Commission disclosure

Since January 2021, the FCA requires credit brokers to disclose any commission they receive from the lender. If your window installer is acting as a credit broker (receiving commission for arranging your finance), they must tell you the amount or the nature of the commission before you sign.

The total cost comparison

The total cost of a £10,000 window replacement across the main finance routes:

Route	APR	Term	Monthly payment	Total repaid	Cost of credit
Cash payment	—	—	—	£10,000	£0
Dealer 0%	0%	24 months	£417	£10,000	£0
Dealer low-rate	4.9%	60 months	£188	£11,280	£1,280
Personal loan (good credit)	5.5%	60 months	£191	£11,460	£1,460
Personal loan (average credit)	9.9%	60 months	£210	£12,600	£2,600
Novuna (typical)	9.9%	60 months	£210	£12,600	£2,600
Ideal4Finance (higher risk)	14.9%	60 months	£236	£14,160	£4,160

The gap between cash and the most expensive finance route is £4,160 on a £10,000 replacement. That is the equivalent of three additional windows.

Secured loans: the high-risk option

Some homeowners consider a secured loan (a “second charge” on the property) to fund major home improvements. These loans use your home as collateral:

• Typical APR: 8-15%
• Terms: 5-25 years
• Risk: If you default, the lender can repossess your home

A secured loan for £10,000 at 10% APR over 10 years costs £15,858 in total — £5,858 of interest. The monthly payment is lower (£132) but the total cost is substantially higher than any unsecured option. The FCA considers secured loans to be higher risk and requires lenders to provide enhanced disclosures.

Practical advice: If a window company or broker suggests a secured loan, step back. Window replacement is not a good reason to put your home at risk. Use an unsecured personal loan or dealer finance instead.

The VAT question

Window installations on existing homes are subject to VAT at 20%. If you are financing the installation, the VAT is included in the finance amount — you are borrowing £12,000 (including £2,000 VAT) rather than £10,000.

However, if the installation qualifies as an Energy Saving Material (ESM) — which is possible for windows under certain grant schemes — the VAT may be reduced to 0% or 5%. See our ECO4 window grant eligibility guide for how grant-funded installations handle VAT.

For grant-funded installations (ECO4 or GBIS), the grant covers the full cost including VAT. You do not pay the VAT personally — the energy company pays it as part of the grant funding.

What to check before signing any finance agreement

• Is the lender FCA-authorised? Check the FCA register at register.fca.org.uk
• What is the total amount repayable? Not just the monthly payment — ask for the figure in writing
• Is there a 14-day cooling-off period? It is mandatory on regulated agreements
• Does the agreement include Section 75 protection? It should, if it is a hire purchase or credit sale agreement
• What happens if the window company goes bust before completing the work? Under Section 75, the finance company should refund you
• Is the installer receiving commission? Ask for the commission disclosure
• Can you overpay or settle early? Most personal loans allow early settlement with a small penalty (typically 1-2 months’ interest)

When finance makes sense

Finance is not inherently a poor choice. It makes sense when:

1. Cash is not available: Windows have failed and need replacement now; waiting 2-3 years to save up means living with condensation, draughts, and high heating bills
2. The 0% deal is genuinely 0%: If a national company offers 0% over 24 months, and their price is competitive with independent installers, you are borrowing for free
3. The work is urgent and the cost is moderate: A £3,000-£5,000 loan over 3-5 years at 5-7% APR costs £400-£1,000 in interest — a reasonable price for improving your home’s comfort and energy efficiency now rather than later

Finance does not make sense when:

1. The APR is above 10%: The total cost of credit becomes disproportionate to the improvement
2. You are offered a secured loan: The risk is too high for a home improvement that does not add structural value
3. The window company is pressuring you: High-pressure sales tactics and finance sign-ups in your home are a red flag. The FCA requires a 7-day “consideration period” for face-to-face credit sales above £35

Summary

• Dealer 0% finance is the cheapest option if the base price is competitive
• Personal loans at 5-7% APR are the best unsecured option for independent installers
• Novuna and Ideal4Finance are the two main specialist home improvement finance providers — both are FCA-authorised
• Avoid secured loans for window replacements
• Always check FCA authorisation, total cost, and commission disclosure before signing
• Section 75 protection applies to all regulated credit agreements — if the installer fails, the finance company is liable