I'm working on renovating the downstairs/basement level of my multi-level timber house, which has both tile and carpet over a concrete slab. The rest of the house is made of timber weatherboard and has insulation in the walls and ceiling, along with a heat pump installed on the top level (living area). However, the house has a lot of single-glazed windows and doors. Because installing a heat pump is tricky due to the layout, I'm considering electric underfloor heating for the bottom level. I'm curious if this would be effective, especially since heat rises through the timber structure. Has anyone tried this and found it beneficial? By the way, I live in Auckland, New Zealand, so while it's not freezing cold here, our house-building techniques leave a lot to be desired when it comes to insulation.
1 Answer
The efficiency of electric underfloor heating really depends on your local electric rates. While electric systems are technically 100% efficient, heat pumps are rated around 300-500% efficient since they move heat rather than generate it. If you have a good heat pump option, it might be cheaper long-term. But if gas or propane are affordable, consider those too, though they might have higher carbon emissions.
Thanks for the info! I see your point about gas being more pricey in my area. A heat pump sounds great but definitely wouldn't fit in this layout!