BOXT vs Heatable: 2026 boiler installation comparison for UK landlords
Updated 2026-05-21 · 6 min read
If your boiler dies between tenancies you usually have under a week to replace it before you lose rent. BOXT and Heatable are the two big online-first boiler installers that can quote and install fast. They look similar from the outside but operate quite differently underneath. This guide compares them on the metrics that matter to landlords: turnaround, brand range, finance, warranty and the small print.
How each one works
**BOXT** is owned by Bosch and is the brand's official installer in the UK. You answer a short online questionnaire about your existing boiler, get a fixed price and book an install, typically within three to five working days. The brand range is limited to Worcester Bosch (BOXT's parent company) plus a small selection of compatible options.
**Heatable** is independent of any manufacturer. The online questionnaire is similar but you get a wider range of brand options, often with same-week installation availability and a price-match guarantee.
Speed of install
Both can usually install within five working days for a like-for-like swap. For a complex job (boiler relocation, system-to-combi conversion) BOXT tends to be slower because of Bosch's training requirements; Heatable's broader engineer pool moves faster on conversions.
For landlords with empty-property windows of less than a week, ask both for the earliest available slot before paying a deposit.
Brand range and prices
**BOXT** primarily sells Worcester Bosch boilers, which carry a strong reputation but are not the cheapest. A standard 30kW combi installed runs £2,200 to £3,200 in 2026, depending on flue work.
**Heatable** offers Worcester, Vaillant, Viessmann, Ideal and Baxi. The same 30kW combi swap typically lands at £1,800 to £2,800 depending on brand. Heatable's price-match guarantee will undercut BOXT if you produce a quote.
Warranty
**BOXT** offers up to a 12-year manufacturer warranty on Worcester Bosch Greenstar models when installed by an accredited engineer. The warranty is honoured directly by Bosch.
**Heatable** passes through whatever the manufacturer warranty is for the chosen boiler: typically 10 years for Worcester, 10 years for Vaillant, 12 years for Viessmann, 7 years for Baxi.
Finance options
Both providers offer monthly finance through Novuna or similar UK consumer-credit partners. APR is typically 9.9% to 11.9% depending on credit profile.
BOXT also has interest-free options on certain models, particularly during seasonal campaigns. Heatable matches these when running their own promotions.
Which to pick for landlords
If you trust Worcester Bosch and want the longest possible manufacturer warranty (12 years), pick **BOXT**.
If you want price flexibility, broader brand choice and slightly faster installation in non-standard cases, pick **Heatable**.
Whichever you choose, time the install to fall in a tenancy gap so you do not have to coordinate access. Both providers will issue the gas safety record (CP12) on completion of the install.
Common questions
- Do BOXT and Heatable issue a gas safety certificate?
- Yes. Both register the installation with Gas Safe and issue a CP12-equivalent commissioning certificate on completion. This satisfies your annual gas safety obligation for the first year.
- Can I claim a boiler upgrade grant through either?
- Both will process the Boiler Upgrade Scheme grant (£7,500 for heat pumps) where the property qualifies. Standard gas-to-gas swaps do not qualify for BUS.
- What happens if the install runs late?
- BOXT offers a £100 credit if they miss an agreed install date. Heatable typically offers a £50 to £100 same-day credit. Always confirm the policy at quote time.