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	Baxi Heating UK : Potterton : Promax Combi - 24 HE Plus LPG LPG : Combi : Condensing : Wall mounted : ( 20 - 20 kW)	Seasonal efficiency: − 93.2%
	Baxi Heating UK : Potterton : Promax System - 24 HE Plus LPG LPG : Regular : Condensing : Wall mounted : ( 24 - 24 kW)	Seasonal efficiency: − 93.2%
	Baxi Heating UK : Baxi : Duo-tec Combi - 28 HE LPG LPG : Combi : Condensing : Wall mounted : ( 24 - 24 kW)	Seasonal efficiency: − 93.2%
	Baxi Heating UK : Baxi : Duo-tec Combi - 24 HE LPG LPG : Combi : Condensing : Wall mounted : ( 20 - 20 kW)	Seasonal efficiency: − 93.2%
	Baxi Heating UK : Baxi : Duo-tec Combi - 33 HE LPG LPG : Combi : Condensing : Wall mounted : ( 28 - 28 kW)	Seasonal efficiency: − 93.2%
	Baxi Heating UK : Baxi : Megaflo System - 18 HE LPG LPG : Regular : Condensing : Wall mounted : ( 18 - 18 kW)	Seasonal efficiency: − 93.2%
	Baxi Heating UK : Baxi : Megaflo System - 28 HE LPG LPG : Regular : Condensing : Wall mounted : ( 28 - 28 kW)	Seasonal efficiency: − 93.2%
	Baxi Heating UK : Baxi : Megaflo System - 32 HE LPG LPG : Regular : Condensing : Wall mounted : ( 32 - 32 kW)	Seasonal efficiency: − 93.2%
	Keston Boilers : Keston : K - 170P LPG : Regular : Condensing : Wall mounted : ( 51 - 55.8 kW)	Seasonal efficiency: − 93.1%
	Dimplex : Dimplex : OV 18 LPG : Regular : Condensing : Wall mounted : ( 18.1 - 18.1 kW)	Seasonal efficiency: − 93.1%

Building Regulations 2007 Boiler Efficiency Requirement

Under the revised Building Regulations Part L (S.I. No. 854 of 2007):
After the 31st day of March 2008, oil and gas fired boilers in new dwellings must meet a minimum seasonal net efficiency of 86% and where oil and gas fired boilers are being installed as replacements in existing dwellings, those boilers must meet a minimum seasonal net efficiency of 86% where practicable.