ThermoMate coupon codes

Find the latest offers from ThermoMate here, we update this page continuously.

✓ Last checked & updated: November 12, 2026 Julia

Reviewed by Julia

Deal

ThermoMate Black Friday Early Bird Exclusive

Valid until 12/31/2026 · Enjoy up to 30% OFF selected ThermoMate products during our Black Friday Early Bird Sale. Use voucher code THEL10 at checkout to receive an EXTRA 10% OFF eligible purchases. Valid on eligible ThermoMate products only. The additional 10% discount applies when using code THEL10 at checkout. Cannot be combined with other discount codes. Offer valid for a limited time only. Subject to product availability. Shop now and save on your winter heating essentials!

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Deal

ThermoMate Black Friday Sale 2026

Valid until 12/31/2026 · Enjoy our ThermoMate Black Friday Sale! Get up to 30% OFF selected ThermoMate products, plus an EXTRA 10% OFF with voucher code BLACKFRIDAY10. Terms & Conditions: Valid on eligible ThermoMate products only. Enter code THBF10 at checkout to receive an additional 10% discount. Cannot be combined with other discount codes. Offer valid for a limited time only. Subject to product availability. Shop now and enjoy exclusive Black Friday savings!

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Deal

ThermoMate Black Friday Early Bird Sale 2026

Valid until 12/31/2026 · Enjoy ThermoMate's Black Friday Early Bird Sale! Save up to 30% on selected ThermoMate products. Valid on eligible products only. Discounts are applied according to the listed promotional prices. Offer valid during the promotional period only. Cannot be combined with other promotions or discount codes unless otherwise stated. Subject to product availability. ThermoMate reserves the right to modify or end the promotion at any time. Shop early and save big on your winter heating essentials!

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Deal

ThermoMate Black Friday Sale 2026

Valid until 12/31/2026 · Black Friday Special Offer – ThermoMate Enjoy up to 30% OFF selected ThermoMate products. Get an EXTRA 10% OFF eligible purchases with code THBF10. Enter the voucher code at checkout to redeem the additional discount. Valid during the Black Friday promotional period only. The additional discount applies to eligible products only. Cannot be combined with other discount codes unless otherwise stated. Offers are subject to product availability. ThermoMate reserves the right to modify or end the promotion at any time. Shop now and enjoy exclusive Black Friday savings!

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Deal

ThermoMate Cyber Monday Sale 2026

Valid until 12/31/2026 · Cyber Monday Special Offer – ThermoMate Enjoy up to 30% OFF selected ThermoMate products. Get an EXTRA 10% OFF eligible purchases with code THBF10. Enter the voucher code at checkout to redeem the additional discount. Valid during the Cyber Monday promotional period only. The additional discount applies to eligible products only. Cannot be combined with other discount codes unless otherwise stated. Offers are subject to product availability. ThermoMate reserves the right to modify or end the promotion at any time. Don't miss out on these exclusive Cyber Monday deals. Shop now and save big!

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Deal

Black Friday Deal – ThermoMate Vent Pipe Kit

Valid until 12/31/2026 · Offer valid from November 9 to November 25, 2026. Applies to the ThermoMate 3-Inch Horizontal Stainless Steel Vent Pipe Kit only. Offer is subject to product availability and while stocks last. Cannot be combined with other promotional offers or discount codes unless otherwise stated. Shipping fees and applicable taxes are not included. ThermoMate reserves the right to modify or end the promotion at any time.

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Apply the coupon code (step by step)

Go to thermomate.com and choose a heater by kW size, or open the Help Me Choose guide.
Check that the voltage matches your panel, 120V or 208 to 240V.
Add it to the cart, then open the cart in the top right corner.
Click Check out and look for the discount code box beside the order summary.
Paste the ThermoMate promo code and press Apply.
Check the new total before you pay. Hot showers ahead!

ThermoMate statistics

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Nov 9Latest code added

New codes per month (12 mo)

New ThermoMate codes appear roughly every week.

Ways to save at ThermoMate

Sales & promotions at ThermoMate

✓ Available now

Active right now, see the offer above.

Tankless water heaters from ThermoMate

Electric tankless water heaters are ThermoMate's core line, and a coupon code or sale can trim the price. Sizes run from 6 to 14 kW for whole home or point of use setups. The range also covers mini tank heaters, gas tankless units and cooktops. Shipping is free to addresses in the US mainland. New subscribers get 5% off an order through the email signup. Black Friday and Cyber Monday sales usually bring the deepest cuts. Kitting out the rest of the kitchen? Compare Euhomy.

FAQ

Where does ThermoMate's free shipping apply?

Shipping is free to addresses in the US mainland. For Alaska, Hawaii, Puerto Rico, Guam or Canada, call the team, and you pay the freight for that address.

What is ThermoMate's return window?

You can request a return within 30 days of delivery. A general return needs a new, unused heater in its original box with all parts. The team answers return requests within two business days.

What should I do if my ThermoMate heater arrives damaged?

If the box is visibly damaged, refuse the delivery. If you find hidden damage, take photos of the box and the heater within 48 hours and contact support.

Is there a ThermoMate first order discount?

Yes. Signing up for the ThermoMate email list unlocks 5% off an order.

Which ThermoMate kW size do I need?

It depends on how many fixtures run at once and your incoming water temperature. The Help Me Choose guide on thermomate.com walks you through it, and support answers at +1 844 334 4203.

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