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Excellent 4.8 out of 5
Excellent 4.8 out of 5

Firebird Envirogreen™ Slimline Heatpac C20 External Regular Oil Boiler

Firebird Envirogreen™ Slimline Heatpac C20 External Regular Oil Boiler Boiler
Typical Price (inc VAT)
£1,585
Typical installation Cost (inc VAT)*
£1000 - £1500
Sundries (Filter, Flue, etc)
£300
Total Cost
£2,885 - £3,385

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Make Firebird
Model Envirogreen™ Slimline Heatpac C20 External Regular Oil Boiler
Is Condensing Condensing
Efficiency Rating 92.5%
Band Rating A Rating
LPG Compatible No
Standard Warranty 2 Years
Central Heating Max. Output 20kW
Mounting Floor Standing
Flow Rate N/A
Typical Price (inc VAT) £1,585
Typical installation Cost (inc VAT)* £1000 - £1500
Sundries (Filter, Flue, etc) £300
Total Cost £2,885 - £3,385
ERP Rating A Heat

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Product Description

The Envirogreen Slimline Heatpac C20 is a condensing regular oil boiler that has been designed by Firebird for external floor-standing installation. Compact design means that it won’t take up too much space and a high-quality weatherproof PVC coating will keep the boiler well protected all year round. Designed with efficiency in mind, the Envirogreen boasts an efficiency rating of 93% and ErP A-rating for heat. The output rating of 20 kW makes this the perfect choice for smaller homes with 1 bathroom.

In addition to the 20 kW model, the Envirogreen also includes 26 kW and 35 kW boilers too. So, if the 20 kW won’t meet the heating and hot water demands of your home, there are a couple of more powerful boilers available.

Key features of the Envirogreen Slimline HeatPac C20 include a low NOx or blue flame burner options, full insulation, acoustic design for ultra-quiet operation, patented heat exchanger, removable sides for ease of access, expansion vessels, circulating pump, a PCB control which uses highly accurate thermistors with an anti-cycling function, frost protection stat, a low pressure switch that protects the unit in the unlikely event of system water loss, stainless steel terminal guard and piping carried from the back or underneath the unit to give you flexibility with the installation.

As a regular boiler (heat-only or conventional) it needs to be installed as part of a heating system alongside a hot water storage cylinder, cold water storage tank and a feed and expansion tank. As a result, regular boilers aren’t suitable for smaller homes where space is limited.

Available with a 2 year warranty as standard, with the option to upgrade to 10 years, you can be confident that this is a boiler that won’t let you down.

* This is a guide price for a straightforward, like-for-like boiler replacement. Installation costs will vary dependent on work required.

Why not compare these similar boilers?

Boiler Model kW Efficiency Warranty Typical Price

Available

Firebird Envirolite Slimline Heatpac CR20 External Regular Oil Boiler 20kw 90% 2 years £1,500 VIEW
Firebird Envirolite Slimline Heatpac CR26 External Regular Oil Boiler 26kw 90% 2 years £1,500 VIEW
Firebird Envirolite Slimline Heatpac CR35 External Regular Oil Boiler 35kw 92.6% 2 years £1,731 VIEW
Firebird Blue Supreme Utility C20 Internal Regular Oil Boiler 20kw 97.4% 2 years £2,440 VIEW
Firebird Blue Supreme Utility C26 Internal Regular Oil Boiler 26kw 97.4% 2 years £2,435 VIEW
Firebird Blue Supreme Popular C20 Boilerhouse Reg. Oil Boiler 20kw 97.4% 2 years £2,325 VIEW
Firebird Blue Supreme Popular C26 Boilerhouse Reg. Oil Boiler 26kw 97.4% 2 years £2,385 VIEW
Firebird Blue Supreme Slimline Heatpac C20 External Regular Oil Boiler 20kw 97.4% 2 years £1,600 VIEW
Firebird Blue Supreme Slimline Heatpac C26 External Regular Oil Boiler 26kw 97.4% 2 years £1,700 VIEW
Firebird Envirogreen Popular C44 Boilerhouse Regular Oil Boiler 44kw 93.8% 2 years £1,900 VIEW
Firebird Envirogreen Popular C58 Boilerhouse Regular Oil Boiler 58kw 93% 2 years £2,200 VIEW
Firebird Envirogreen Popular C73 Boilerhouse 73kW Regular Oil Boiler 73kw 97.4% 2 years £2,355 VIEW
Firebird Enviromax Kitchen Internal 35kW Regular Oil Boiler 35kw 92% 2 years £1,975 VIEW
Firebird Envirolite Utility CR20 Internal Regular Oil Boiler 20kw 90% 2 years £1,120 VIEW
Firebird Envirolite Utility CR26 Internal Regular Oil Boiler 26kw 90% 2 years £1,500 VIEW
Firebird Envirolite Utility CR35 Internal Regular Oil Boiler 35kw 92.6% 2 years £2,200 VIEW
Firebird Envirolite Boilerhouse CR20 Regular Oil Boiler 20kw 90% 2 years £1,100 VIEW
Firebird Envirolite Boilerhouse CR26 Regular Oil Boiler 26kw 90% 2 years £N/A VIEW
Firebird Envirolite Boilerhouse CR35 Regular Oil Boiler 35kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen™ Kitchen 12-18 Internal Regular Oil Boiler 12-18kw 91.6% 2 years £1,250 VIEW
Firebird Envirogreen™ Kitchen C20 Internal Regular Oil Boiler 20kw 92.5% 2 years £1,300 VIEW
Firebird Envirogreen™ Kitchen C26 Internal Regular Oil Boiler 26kw 92.6% 2 years £1,420 VIEW
Firebird Envirogreen™ Kitchen C35 Internal Regular Oil Boiler 35kw 92.6% 2 years £1,775 VIEW
Firebird Envirogreen™ Heatpac 12-18kW External Regular Oil Boiler 18kw 91.6% 2 years £1,590 VIEW
Firebird Envirogreen™ Heatpac C20 External Regular Oil Boiler 20kw 92.5% 2 years £1,585 VIEW
Firebird Envirogreen™ Heatpac C26 External Regular Oil Boiler 26kw 92.6% 2 years £1,610 VIEW
Firebird Envirogreen™ Heatpac C35 External Regular Oil Boiler 35kw 92.6% 2 years £2,000 VIEW
Firebird Envirogreen™ Slimline Heatpac C20 External Regular Oil Boiler 20kw 92.5% 2 years £1,585 VIEW
Firebird Envirogreen™ Slimline Heatpac C26 External Regular Oil Boiler 26kw 92.6% 2 years £1,612 VIEW
Firebird Envirogreen™ Slimline Heatpac C35 External Regular Oil Boiler 35kw 92.6% 2 years £1,950 VIEW
Firebird Envirogreen™ Popular 18kW Boilerhouse Regular Oil Boiler 18kw 91.6% 2 years £N/A VIEW
Firebird Envirogreen™ Popular C20 Boilerhouse Regular Oil Boiler 20kw 92.5% 2 years £N/A VIEW
Firebird Envirogreen™ Popular C26 Boilerhouse Regular Oil Boiler 26kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen™ Popular C35 Boilerhouse Regular Boiler 35kw 92.6% 2 years £N/A VIEW
Firebird Envirogreen System C20 Internal Oil Boiler 20kw 92.5% 2 years £1,560 VIEW
Firebird Envirogreen System C26 Internal Oil Boiler 26kw 92.6% 2 years £1,600 VIEW
Firebird Envirogreen System C35 Internal Oil Boiler 35kw 92.6% 2 years £1,950 VIEW
Firebird Envirogreen System C44 Internal Oil Boiler 44kw 93.8% 2 years £2,180 VIEW
Firebird Envirogreen Combipac HE C20 External Oil Boiler 20kw 93% 2 years £2,275 VIEW
Firebird Envirogreen Combipac HE C26 External Oil Boiler 26kw 93% 2 years £2,200 VIEW
Firebird Envirogreen Combipac HE C35 External Oil Boiler 35kw 93% 2 years £2,600 VIEW
Firebird Envirogreen HE C20 Internal Combi Oil Boiler 20kw 93% 2 years £2,150 VIEW
Firebird Envirogreen HE C26 Internal Combi Oil Boiler 26kw 93% 2 years £2,250 VIEW
Firebird Envirogreen HE C35 Internal Combi Oil Boiler 35kw 93% 2 years £2,359 VIEW
Firebird Envirogreen Slimline Combi C20 Internal Oil Boiler 20kw 93% 2 years £2,150 VIEW
Firebird Envirogreen Slimline Combi C26 Internal Oil Boiler 26kw 93% 2 years £2,200 VIEW
Firebird Envirogreen Slimline Combi C35 Internal Oil Boiler 35kw 93% 2 years £2,425 VIEW
Firebird Envirogreen Systempac C20 External Oil Boiler 20kw 92.5% 2 years £1,850 VIEW
Firebird Envirogreen Systempac C26 External Oil Boiler 26kw 92.6% 2 years £1,900 VIEW
Firebird Envirogreen Systempac C35 External Oil Boiler 35kw 92.6% 2 years £2,400 VIEW
Firebird Envirogreen Systempac C44 External Oil Boiler 44kw 93.8% 2 years £2,550 VIEW
Firebird Envirogreen Slimline Systempac C20 External Oil Boiler 20kw 92.5% 2 years £1,850 VIEW
Firebird Envirogreen Slimline Systempac C26 External Oil Boiler 44kw 92.6% 2 years £1,900 VIEW
Firebird Envirogreen Slimline Systempac C35 External Oil Boiler 35kw 92.6% 2 years £2,350 VIEW
Firebird Envirogreen™ Kitchen C44 Internal Regular Oil Boiler 44kw 93.8% 2 years £2,000 VIEW
Firebird Envirogreen™ Kitchen C58 Internal Regular Oil Boiler 58kw 93% 2 years £2,150 VIEW
Firebird Envirogreen™ Kitchen C73 Internal Regular Oil Boiler 73kw 97.4% 2 years £2,300 VIEW
Firebird Envirogreen™ Heatpac C44 External Regular Oil Boiler 44kw 93.8% 2 years £2,400 VIEW
Firebird Envirogreen™ Heatpac C58 External Regular Oil Boiler 58kw 93% 2 years £2,500 VIEW
Firebird Envirogreen™ Heatpac C73 External Regular Oil Boiler 73kw 97.4% 2 years £2,660 VIEW
Firebird Enviromax HEC20 Combi Internal 20kW Oil Boiler 20kw 90.7% 2 years £1,570 VIEW
Firebird Enviromax HEC26 Combi Internal 26kW Oil Boiler 26kw 90.7% 2 years £1,655 VIEW
Firebird Enviromax HEC35 Combi Internal 35kW Oil Boiler 35kw 90.7% 2 years £1,965 VIEW
Firebird Enviromax Combi-Pac External 20kW Oil Boiler 20kw 91.1% 2 years £1,800 VIEW
Firebird Enviromax Combi-Pac External 26kW Oil Boiler 26kw 91.1% 2 years £2,100 VIEW
Firebird Enviromax Combi-Pac External 35kW Oil Boiler 35kw 90.7% 2 years £2,525 VIEW
Firebird Enviromax Combi Slimline Internal 20kW Oil Boiler 20kw 91.1% 2 years £1,965 VIEW
Firebird Enviromax Combi Slimline Internal 26kW Oil Boiler 26kw 91.3% 2 years £2,000 VIEW
Firebird Enviromax Combi Slimline Internal 35kW Oil Boiler 35kw 91.3% 2 years £2,380 VIEW
Firebird Enviroblue HEC20 Combi Internal 20kW Oil Boiler 20kw 93% 2 years £2,400 VIEW
Firebird Enviroblue HEC26 Combi Internal 26kW Oil Boiler 26kw 93% 2 years £1,500 VIEW
Firebird Enviroblue HEC35 Combi Internal 35kW Oil Boiler 35kw 92% 2 years £2,450 VIEW
Firebird Enviroblue Slimline Combi Internal 20kW Oil Boiler 20kw 93% 2 years £2,095 VIEW
Firebird Enviroblue Slimline Combi Internal 26kW Oil Boiler 26kw 93% 2 years £2,100 VIEW
Firebird Enviroblue Slimline Combi Internal 35kW Oil Boiler 35kw 92% 2 years £2,400 VIEW
Firebird Enviroblue Combi-Pac External 20kW Oil Boiler 20kw 93% 2 years £1,300 VIEW
Firebird Enviroblue Combi-Pac External 26kW Oil Boiler 26kw 93% 2 years £1,600 VIEW
Firebird Enviroblue Combi-Pac External 35kW Oil Boiler 35kw 92% 2 years £1,900 VIEW
Firebird Enviromax Popular Boilerhouse 18kW Regular Oil Boiler 18kw 92% 2 years £1,080 VIEW
Firebird Enviromax Popular Boilerhouse 20kW Regular Oil Boiler 20kw 93% 2 years £1,200 VIEW
Firebird Enviromax Popular Boilerhouse 26kW Regular Oil Boiler 26kw 93% 2 years £1,300 VIEW
Firebird Enviromax Popular Boilerhouse 35kW Regular Oil Boiler 35kw 92% 2 years £1,695 VIEW
Firebird Enviromax Popular Boilerhouse 100kW Regular Oil Boiler 100kw 92% 2 years £2,900 VIEW
Firebird Enviromax Kitchen Internal 18kW Regular Oil Boiler 18kw 93% 2 years £1,205 VIEW
Firebird Enviromax Kitchen Internal 20kW Regular Oil Boiler 20kw 93% 2 years £1,295 VIEW
Firebird Enviromax Kitchen Internal 26kW Regular Oil Boiler 26kw 92% 2 years £1,585 VIEW
Firebird Enviromax Kitchen Internal 44kW Regular Oil Boiler 44kw 93% 2 years £2,115 VIEW
Firebird Enviromax Kitchen Internal 58kW Regular Oil Boiler 58kw 92% 2 years £2,145 VIEW
Firebird Enviromax Kitchen Internal 73kW Regular Oil Boiler 73kw 92% 2 years £2,425 VIEW
Firebird Enviromax Heat-Pac External 18kW Regular Oil Boiler 18kw 93% 2 years £1,425 VIEW
Firebird Enviromax Heat-Pac External 20kW Regular Oil Boiler 20kw 93% 2 years £1,575 VIEW
Firebird Enviromax Heat-Pac External 26kW Regular Oil Boiler 26kw 92% 2 years £1,600 VIEW
Firebird Enviromax Heat-Pac External 35kW Regular Oil Boiler 35kw 93% 2 years £1,800 VIEW
Firebird Enviromax Heat-Pac External 44kW Regular Oil Boiler 44kw 93% 2 years £1,900 VIEW
Firebird Enviromax Heat-Pac External 58kW Regular Oil Boiler 58kw 92% 2 years £2,470 VIEW
Firebird Enviromax Heat-Pac External 73kW Regular Oil Boiler 73kw 93% 2 years £1,860 VIEW
Firebird Enviroblue Kitchen Internal 20kW Regular Oil Boiler 20kw 93% 2 years £1,860 VIEW
Firebird Enviroblue Kitchen Internal 26kW Regular Oil Boiler 26kw 92% 2 years £1,700 VIEW
Firebird Enviroblue Kitchen Internal 35kW Regular Oil Boiler 35kw 93% 2 years £2,205 VIEW
Firebird Enviroblue Heat-Pac Slimline External 20kW Regular Oil Boiler 20kw 93% 2 years £1,480 VIEW
Firebird Enviroblue Heat-Pac Slimline External 26kW Regular Oil Boiler 26kw 92% 2 years £1,575 VIEW
Firebird Enviroblue Heat-Pac Slimline External 35kW Regular Oil Boiler 35kw 93% 2 years £1,550 VIEW
Firebird Envirolite Heat-Pac Silverpac Ext 20kW Regular Oil Boiler 20kw 93% 2 years £1,290 VIEW
Firebird Envirolite Heat-Pac Silverpac Ext. 35kW Regular Oil Boiler 35kw 92% 2 years £2,200 VIEW
Firebird Envirolite Boilerhouse 20kW Regular Oil Boiler 20kw 93% 2 years £1,190 VIEW
Firebird Envirolite Boilerhouse 26kW Regular Oil Boiler 26kw 93% 2 years £1,275 VIEW
Firebird Envirolite Boilerhouse 35kW Regular Oil Boiler 35kw 92% 2 years £1,295 VIEW
Firebird Envirolite System Internal 20kW Oil Boiler 20kw 93% 2 years £1,425 VIEW
Firebird Envirolite System Internal 26kW Oil Boiler 26kw 93% 2 years £1,525 VIEW
Firebird Envirolite System Internal 35kW Oil Boiler 35kw 93% 2 years £1,905 VIEW
Firebird Enviroblue Kitchen System Internal 20kW Oil Boiler 20kw 93% 2 years £1,250 VIEW
Firebird Enviroblue Kitchen System Internal 26kW Oil Boiler 26kw 93% 2 years £1,450 VIEW
Firebird Enviroblue Kitchen System Internal 35kW Oil Boiler 35kw 93% 2 years £2,000 VIEW
Firebird Envirolite Silverpac Ext. 26kW Regular Oil Boiler 26kw 92% 2 years £1,300 VIEW
Firebird Enviroblue Heatpac 20kW External Regular Oil Boiler 20kw 94.8% 2 years £N/A VIEW
Firebird Enviroblue Heatpac 26kW External Regular Oil Boiler 26kw 94.8% 2 years £N/A VIEW
Firebird Enviroblue Heatpac 35kW External Regular Oil Boiler 35kw 94.4% 2 years £N/A VIEW
Firebird Slimline Silverpac 20kW External Regular Oil Boiler 20kw 93.8% 2 years £N/A VIEW
Firebird Slimline Silverpac 26kW External Regular Oil Boiler 26kw 93.7% 2 years £N/A VIEW
Firebird Enviromax C20 Internal 20kW System Oil Boiler 20kw 94.8% 2 years £1,555 VIEW
Firebird Enviromax C26 Internal 26kW System Oil Boiler 26kw 94.8% 2 years £N/A VIEW
Firebird Eviromax C35 Internal 35kW System Oil Boiler 35kw 94.4% 2 years £1,945 VIEW
Firebird Eviromax C44 Internal 44kW System Oil Boiler 44kw 93.8% 2 years £2,205 VIEW
Firebird Enviroblue SystemPac C26 External 26kW System Oil Boiler 26kw 94.8% 2 years £N/A VIEW
Firebird Enviroblue SystemPac C20 External 20kW System Oil Boiler 20kw 94.8% 2 years £N/A VIEW
Firebird Enviroblue SystemPac C35 External 35kW System Oil Boiler 35kw 94.4% 2 years £N/A VIEW
Firebird Enviroblue Slimline SystemPac C20 External System Oil Boiler 20kw 93% 2 years £N/A VIEW
Firebird Enviroblue Slimline SystemPac C26 Ext. 26kW System Oil Boiler 26kw 93% 2 years £N/A VIEW
Firebird Enviroblue Slimline SystemPac C35 External System Oil Boiler 35kw 92% 2 years £N/A VIEW

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Excellent 4.8 out of 5
Excellent 4.8 out of 5

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