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Main Combi Eco Elite 30kW Gas Boiler


The Main Combi Eco Lite 30kW Gas Boiler is a newcomer worth your attention. It doesn’t come with a luxury household name like Worcester Bosch, Vaillant, or Baxi. Nevertheless, it offers some features worth your time and money.

Indeed, its affordable price tag is the most impressive feature in its catalogue. At first, we were sceptical. However, we have come to appreciate what this hardworking boiler can do. An overall output rating of 30kWs is impressive.

Continue reading for more on what the Main Combi Boiler has to offer.

Main Combi Eco Elite Key Features

  • It’s an affordable condensing boiler.
  • It has a seasonal 92% efficiency rating.
  • Brass hydraulics block.
  • It’s ErP A-rated for both central heating and hot water production.
  • It has user-friendly controls and an LCD.
  • A sound pressure level of 51 dB
  • Hot water and a central heating max output of 30kWs
  • It can serve up to 15 radiators.
  • It has a hot water flow rate of 12.3 litres per minute.
  • It comes with a standard 5-year part and labour warranty.
  • Boiler Plus compliant.
  • It has a frost-protected thermostat.
  • Compact dimensions of 700mm Height by 390mm Width by 285mm Depth.


Its overall build is decent. We’re not saying it’s the most fabulous-looking boiler in the market. Likewise, it’s not the ugliest either. We’re sure many will appreciate its simple white design that can integrate with most home decor. We particularly like its surface finish—You can tell it will age well.

For those wondering, its controls are behind the flap cover found in the bottom section of the boiler. In it, there’s the temperature control knobs, a decent LCD, and an easy-to-read pressure gauge.

Also, the Main Combi 30kW Combi Gas Boiler is perfect for homes running out of space. Its compact dimensions allow it to fit into most standard kitchen cabinets.

Homeowners and installers have frequently referred to the Main Combi Boiler as hardworking and virtually indestructible. Nevertheless, should anything wrong, you can count on their decent 5-year part and labour warranty. It’s nice to see such on a low-cost boiler. Most boilers that share its price tag offer mediocre 2-year warranties.

Fuel and efficiency

With the Main Combi 30kW Gas Boiler, costly heating bills will be a thing of the past. Energy Saving Trust has certified its performance because of its high 92% efficiency rating. Furthermore, it’s also ErP A-rated for both central heating and domestic hot water production.

If you’re not connected to the national gas grid, you should check out the LPG variants of the same model. They all share the same features.

Power output rating

You’ll rarely find a quality boiler offering such power in its price range. With a central heating and domestic hot water output rating of 30kWs, the Main Combi 30KW boiler can comfortably heat homes with 3 bedrooms and a bathroom. Additionally, its flow rate of 12.3 litres per minute complements its performance.

If 30kWs is overkill for your heating needs, consider the 25kW variant. It’s ideal for smaller homes with one bathroom. Remember, boiler sizing is crucial. You have to try as much as possible to match your heating demands with an ideal boiler. An oversized boiler is just as detrimental as an undersized one.

Installation and servicing

Despite its “infancy” status in the boiler industry, Main has done well to produce an installer and user-friendly unit. Not only is it lightweight for easier installation, but it’s also compatible with a wide range of flue options of up to 20 meters.

Finally, it also comes with a frost-protected thermostat for installation in places like garages and lofts.

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