Baxi MainEco Compact 15kW Heat Only Boiler - 7712025
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Description
The Baxi MainEco Compact Heat 15 is a wall-mounted natural gas heat only boiler with a 15kW output, built as a straight replacement for old, standard-efficiency boilers on systems with a separate hot water cylinder. At 17.4kg installer lift weight in a 625 × 370 × 270mm casing it is one of the lightest ways to modernise an existing system, with front and side access and an easy-fit wall mounting bracket.
Main is now Main by Baxi. Same boiler, same sales code (7712025), now sold under the Baxi brand.
Applications & suitability
Where it goes
A smaller home on mains gas with an existing hot water cylinder and heating controls — the compact casing fits in a kitchen cupboard or airing cupboard.
Typical job
A like-for-like swap of an old, standard-efficiency heat only boiler, keeping the cylinder, tanks and controls in place.
Works with / replaces
Runs alongside your existing hot water cylinder and external heating controls; the telescopic 60/100mm flue (315–500mm) covers most standard wall depths without cutting.
When not to choose this
It only does heating — you need a separate cylinder and external controls already on the system. If you want instant hot water from one unit, or a sealed system with the pump built in, look at the MainEco Compact Combi or System instead.
Key specifications
| Identity | |
| Brand | Baxi |
| Model | MainEco Compact Heat 15 |
| Boiler type | Heat only |
| Fuel | Natural gas |
| Performance | |
| Output (central heating) | 15 kW |
| ErP efficiency class | A |
| NOx class | 6 |
| Sound power level | 33 dB(A) |
| User adjustable CH temperature | 30–80 °C |
| Physical | |
| Dimensions (H × W × D) | 625 × 370 × 270 mm |
| Weight | 17.4 kg |
| Flue type | Telescopic concentric 60/100 mm (315–500 mm) |
| Electrical | |
| Electrical supply | 230 V / 50 Hz |
| Barcode (EAN) | 5033313034559 |
| Warranty | 5 years (registration required) |
Installation & compatibility
This is a gas appliance: installation, commissioning and servicing must be carried out by a Gas Safe registered engineer. It requires an existing hot water cylinder and external heating controls, which are not supplied. *The 5-year warranty applies subject to registration with Baxi after installation.
Related products
Baxi MainEco Compact Heat 18
The 18kW output for homes with a bigger radiator load.
View 18kW Heat OnlyBaxi MainEco Compact 25kW Combi
Heating and instant hot water from one unit, no cylinder or tanks.
View 25kW CombiIdeal for
Straight swaps of ageing heat only boilers where the cylinder and controls stay put — and the 17.4kg lift makes it a genuine one-person hang. Next-day delivery nationwide or click & collect from our Reading trade counter.
Shipping Information
At GetPlumb, we strive to provide reliable and cost-effective delivery options to our customers. Please review our shipping policy below.
🆓 Free Local Delivery (Orders £100 & above)
We offer FREE delivery on orders £100 or more
for selected local areas.
Eligible Postcodes Include:
- RG*
- SL*
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- HP1*, HP3*, HP8*, HP9*, HP10*, HP11*, HP12*, HP13*, HP14*
- WD*, HA*, UB*, TW*, KT*
- W1* – W9*
- NW*, SW*
Delivery Time: 2–4 working days
Shipping Cost: £0.00
📦 Standard Shipping (Weight-Based Rates)
For orders that do not qualify for free delivery, standard
shipping rates apply based on total cart weight.
- For cart weight between 0–2 kg, the shipping cost is £4.50 with a delivery time of 2–4 working days.
- For cart weight between 2–24 kg, the shipping cost is £9.99 with a delivery time of 2–4 working days.
- For cart weight between 24 kg and above, the shipping cost is £60 with a delivery time of 2–4 working days.
🧱 Block Salt (Harvey’s) – Unit-Based Shipping
This rate applies only to Harvey’s block salt products.
- £7.99 is charged for every 3 items.
- The charge increases by £7.99 for each additional set of 3 items.
Examples:
- 1–3 items → £7.99
- 4–6 items → £15.98
- 7–9 items → £23.97
Delivery Time: 2–4 working days
📏 Large / Long Items (Length-Based Shipping)
For oversized items where the product length is 1.5 metres or more:
Conditions:
- Product length ≥ 1.5 m
- Cart weight ≤ 40 kg
Shipping Cost: £18.00 (flat rate)
Delivery Time: 2–4 working days
Collection from Store
Customers can also choose to collect their order from our store in
Reading, UK, at no additional charge. For any questions regarding shipping, please contact our support team at online@getplumb.co.uk.
