- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 16 Dec 2020
Seasonal performance factor
Seasonal performance factor (SPF) is a: ‘…measure of the operating performance of an electric heat pump over the season. It is the ratio of the heat delivered to the total electrical energy supplied over the season, but there are up to seven different ways to draw the system boundaries. For example, SPFH2 excludes auxiliary resistance heating while SPFH4 includes it – making a large difference.’
Ref Non-domestic Building Services Compliance Guide For Scotland, 2015 Edition v1.1, published by the Scottish Government, Building Standards Division in April 2018.
See also: Coefficient of performance.
 Related articles on Designing Buildings Wiki
- Absorption heat pump.
- Air source heat pumps.
- Coefficient of performance.
- Combined heat and power CHP.
- Domestic heat pumps and the electricity supply system.
- Earth-to-air heat exchangers.
- Exhaust air heat pump.
- Ground source heat pumps.
- Heat exchanger.
- Heat pump.
- Heat recovery.
- Residential heat pump installations: the role of vocational education and training.
- Solar thermal heating.
- Types of domestic boiler.
- Water source heat pumps.
Featured articles and news
Smart motorway strategies.
Actuate UK urges change of deadline to at least December 2022.
Study shows harmful impact of late payments on SME personnel.
Upcoming changes to the commercial supply and purchase of chemicals.
CLC introduces card for learners.
CIOB members recognised for public procurement.
Experts discuss the complex issues damaging the supply chain.
The co-founder of Get Kids into Survey discusses career paths for kids.
Report examines lack of detail in the Government's vision.
Our director Gregor Harvie hosts 4 webinars at the IHBC marketplace on Friday.
Look up construction terms on any website direct from your browser.
The revival of the public sphere in Toronto.
The story behind the copycat architecture craze.
Insight into construction materials supply and demand issues.