WarmZilla Discount Codes

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Top WarmZilla Offers for June 16, 2025

£150 Off
Code
£150 Off Your New Boiler on Easter Sale
Last used 7h ago
Show code
S-150
Details
Offer's Details: Save £150 on energy-efficient boiler systems with this WarmZilla coupon during their exclusive seasonal promotion.
Starting £169
Promo
Verified
16h ago
Smart Home Thermostats Starting from £169
*View restrictions
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Details
Deal works, here's the proof
Offer's Details: Upgrade your home comfort with WarmZilla thermostats starting at £169 and enjoy energy-efficient control.
Terms:
- Prices start at £169 for select models.
- Offer applicable while stock lasts.
- Product specifications and availability may vary.
This deal is working. See the proof below.
Tested by Sobur Ali 16h ago
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20% Off
Promo
Verified
2h ago
Save 20% on Select Smart Home Security Products
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Details
Offer's Details: Save 20% on select smart home security solutions at WarmZilla, enhancing your home’s safety effectively.
6% Off
Promo
Verified
4h ago
WarmZilla Promo: 6% Off Select Combi Boilers
*View restrictions
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Details
Deal works, here's the proof
Offer's Details: Save 6% on select energy-efficient heating solutions with WarmZilla and enjoy reduced costs for your home.
Terms:
- Applicable on select combi boilers only.
- Offer valid while supplies last.
- Discount applied at checkout.
This deal is working. See the proof below.
Tested by Sobur Ali 4h ago
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Starting £54^.99
Promo
Verified
14h ago
Smart Home Speakers Starting from £54.99
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Details
Deal works, here's the proof
Offer's Details: Enhance your home with this WarmZilla promo: Smart speakers available from just £54.99. Shop now!
This deal is working. See the proof below.
Tested by Sobur Ali 14h ago
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Starting £59^.49
Promo
Verified
17h ago
Smart Home TRVs Starting from £59.49 at WarmZilla
Get deal
Details
Deal works, here's the proof
Offer's Details: Explore smart and efficient home temperature control solutions with prices starting at £59.49 from WarmZilla.
This deal is working. See the proof below.
Tested by Sobur Ali 17h ago
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Previously Featured Coupons & Deals

Starting £1489
Promo
Boiler Package Starting from £1489 at WarmZilla
Get deal

Top WarmZilla Discount Codes or Coupon Codes June 2025

Offer Description	Expires	Code
£150 Off Your New Boiler on Easter Sale	01 May	ES-*****
Smart Home Thermostats Starting from £169	-	-
20% Off Select Smart Home Security Products	-	-
6% Off Select Combi Boilers	-	-
Smart Home Speakers Starting from £54.99	-	-

About WarmZilla

Founded in 2018, WarmZilla is a UK-based website that makes it easy to purchase a new boiler, with fixed prices and next day installation in England, Scotland, and Wales. Here you can compare boilers from top brands including Worcester Bosch, Vaillant, Ideal, and more, with all installations done by Gas Safe registered engineers. WarmZilla offers a free online quote tool that can be completed in under two minutes, and you receive transparent pricing upfront. The boiler installations are covered by up to 12 years manufacturer warranty, with interest-free finance available over 24 months. WarmZilla has installed thousands of boilers, and the focus is on speed, transparency, and ease.

How Do I Apply a WarmZilla Promo Code During Checkout to Get a Discount?

Choose your boiler package: Head to warmzilla.co.uk and click 'Get a Quote' in the middle of the screen. Answer the multiple-choice questions regarding your property and the heating you need. After this, you will be presented with a list of recommended boilers such as Worcester Bosch Greenstar 4000 or Ideal Logic Plus. Click 'Continue with this boiler' to continue.
View your boiler package: On the 'Your Boiler Package' page, you will be able to view the boiler you have selected, the installation information and any extra features. Click 'Continue to Checkout' at the bottom of the summary page to move to the payment stage.
Add your discount code: Head to the 'Checkout' page and scroll down to the 'Order Summary' section on the right-hand side. Underneath the total, you will see the 'Have a promo code?' text. Click on this text link to reveal a text field labelled 'Enter promo code'. A discount code box will appear underneath. Paste your discount code from DontPayFull into this box and click 'Apply'. The discount will update immediately.
Place your order: Enter your personal details, installation address and payment information. Click the 'Place Order' button at the bottom to checkout.

What should I do if my WarmZilla discount code does not work?

Verify boiler or service type: Any coupon codes will likely be for a particular type of boiler or service. If you chose a high end or custom package, the code cannot be used.
Check postcode eligibility: Some offers are only available in specific areas. See if you can apply a different postcode from a qualifying region to see if you are eligible to any restrictions.
Double check the quote page code box entry: All discount codes need to be applied on the quote page before checkout. If this step is missed, the system may not pick up the discount afterwards.
Apply manual application for live chat: If the code looks good but doesn't work, get in touch with customer support via live chat. They will be able to check the code and apply the discount manually to your order.

WarmZilla Discount Code & Savings FAQ for Smarter Shopping

How can you make the biggest saving on a boiler swap at WarmZilla?

Save up to £300 when you shop for a boiler upgrade at WarmZilla. Shop WarmZilla's free wireless thermostat deal (worth £199) on chosen models for the biggest discount.

Does WarmZilla provide any incentives for customers who are trading in an old boiler?

Absolutely, WarmZilla has up to £400 off for customers who upgrade from a non-condensing boiler. This discount will be applied automatically in the quote stage, assuming the necessary criteria have been met.

Yes, you can apply a valid discount code when you choose finance at the checkout. The promo code reduces the total cost before your payment plan is applied.

How often does WarmZilla update their discount codes?

Our data shows that they have new discount codes come out every 4 to 6 weeks, usually with seasonal timings such as winter preparation or summer refreshes.

We test all our codes on DontPayFull on a regular basis. The tested codes are hand checked for success based on their real-life usage, so you can tell which ones are live and working.