The Main Eco Compact 30kW Combi Boiler is designed for installers who need a straightforward, dependable fit-and-forget solution. Built by Main (part of the Baxi Group), it offers 30kW output with a 93% efficiency rating and an ErP A rating for both space and water heating, making it a solid mid-range choice for 2 to 3 bedroom homes with one or two bathrooms.

At 700mm high, 390mm wide and 285mm deep, the boiler is compact enough for a standard kitchen cupboard, and at around 29.5kg lift weight it's manageable for a single installer to handle and fit. The casing hides the system connections for a cleaner finish once installed, and front access to all components keeps servicing and repairs simple without needing to remove the boiler from the wall.

Inside, it runs a brass hydraulic block and stainless steel heat exchanger, giving it the durability installers look for in a workhorse boiler. It's fully modulating, holds a Class 5 NOx rating (the lowest band available), and is certified to work with up to 20% hydrogen blends, keeping it compliant as gas standards evolve. A top central flue keeps installation routing straightforward on most jobs, with an optional stand-off frame and rigid filling link included as standard.

On the controls side, the boiler is Boiler Plus compliant and Energy Saving Trust endorsed, and it's compatible with the Baxi uSense wired smart thermostat for OpenTherm-enabled modulation and better customer comfort. The LED display gives clear temperature, status and fault diagnosis readouts, so troubleshooting on site is quick.

Main backs the Eco Compact range with a 5-year parts and labour warranty as standard, which is competitive for this price point and gives customers reassurance without needing extra registration steps. Combined with its low unit cost, it's a boiler that suits budget-conscious replacements, rental properties and landlord jobs where reliability and fast turnaround matter more than premium features.

It's also available in 15kW, 18kW, 24kW and 25kW outputs, so if 30kW is more capacity than a particular property needs, there's room to spec down within the same range.