Main Eco Compact Heat

Heat Only Boilers

Main Eco Compact Heat

The lightweight Main Eco Compact Heat is small enough to fit into a cupboard and is perfect for replacing old, standard efficiency boilers.

Double points return for Baxi installers

Now even bigger and better!

 

We’re giving you double points on qualifying products from 6th Jan – 2nd March 2026. Work done. Points doubled – simple.

 

All you need to do is install and register qualifying products on our loyalty scheme Baxi Works and those double points are yours!

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Features and Benefits

Warranty

5 year warranty*

    Outputs 15kW, 18kW, 24kW and 30kW

      Only 17.4kg installer lift weight

        Compact cupboard fit

          Easy fit wall mounted bracket

          A durable and simple-to-install bracket designed for secure wall mounting with minimal effort.

            Front and side access

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              *Subject to registration on warranty.baxi.co.uk or Baxi Works. Terms and conditions apply

              Product Literature

              Installation and Service Manuals

              Installation and Service Manuals

              Product Documentation

              No documentation available.

              User Guides

              User Guides

              Product Documentation

              No documentation available.

              Energy Labels

              Energy Labels

              Product Documentation

              No documentation available.

              Solutions Brochure

              Main Eco Compact Heat

              Product Documentation

              No documentation available.

              Main Eco Compact Heat only Boiler Dimensions - Baxi Professional for Installers

              Dimensions

              A: Width 370mm

              B: Height 625mm

              C: Depth 270mm

               

              Service Clearance

              D: Side 5mm*

              E: Upper 190mm*

              F: 120mm*

              G: 5mm* 

               

              *500mm for servicing 

              Technical Specification

              Main Eco Compact HeatUnitsMain Eco CompactHeat 15kWMain Eco CompactHeat 18kWMain Eco CompactHeat 24kWMain Eco CompactHeat 30kW
              Sales code (boiler only)Controls and accessories7712025771202677120287712029
              Operating mode selector switch with resetYesYesYesYes
              User adjustable CH temperatureRange 30°C to 80°CYesYesYesYes
              LED temp/status/ fault diagnosis displayYesYesYesYes
              Gas
              NOx class6666
              ErP product information
              NOxmg/kWh20212424
              Sound power level, indoorsLWA dB33343737
              Space heating efficiency classAAAA
              Heat input central heating (CH)kW max gross (QnHs) – kW min gross (QnHs)18.32 – 8.5921.75 – 8.5928.62 – 8.5934.35 – 8.59
              Heat output CH (non-condensing)kW max (Pn) – kW min (Pn)16 – 7.519 – 7.525 – 7.530 – 7.5
              Gas supply pipe sizemm22222222
              Inlet supply pressure (natural gas)mbar20202020
              Maximum gas ratem3/hr1.752.072.733.27
              Mechanical and hydraulic
              Compartment ventilation requiredNoNoNoNo
              Flow/return pipemm22222222
              Condensate discharge pipe connectionmm21.521.521.521.5
              Electrical
              Electrical supplyVolts / Hz230V / 50Hz230V / 50Hz230V / 50Hz230V / 50Hz
              Permanent live requiredNoNoNoNo
              Power consumptionWatts20233344
              External fuse ratingAmps3333
              Internal fuse rating1.6T1.6T1.6T1.6T
              Boiler IP rating (electrical protection)Approval CategoryIPX4DIPX4DIPX4DIPX4D
              Pump overrunNoNoNoNo
              Concentric flue systems
              Standard telescopic concentric fluemm315-500315-500315-500315-500
              Horizontal concentric (60/100mm)
              Max equivalent length (m)6666
              Reduction Per 135º bend (m)0.50.50.50.5
              Reduction Per 93º bend (m)1111
              Weights
              Gross packaged boiler weight(Max)kg19.519.519.521.5
              Maximum installation lift weightkg17.417.417.419.5

              Contact your ASM

              If you are a merchant or installer, your local Baxi representative is here to help.