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Living in the PNW, I'm building a new house and I've chosen a dual fuel hybrid heat pump system as per https://www.bryantbing.com/products/hybrid-heat/ https://
by poutine 4y ago
Living in the PNW, I'm building a new house and I've chosen a dual fuel hybrid heat pump system as per https://www.bryantbing.com/products/hybrid-heat/ https://www.bryantbing.com/products/hybrid-heat/
I'll also have solar + battery. Should be able to run the furnace & fan but not the heat pump (too many kW/h) during a power outage and thus heating with gas. It'll run off the heat pump for 90-95% of the year, only using gas on the coldest days, or during an outage. To go full heat pump for 100% of the year you need to seriously upsize the heat pump(s) and you wouldn't have performance during an outage.
- pinot 4y agoCan't heat with gas without electricity, unless you have a genset or power wall kind of thing to provide epower.
- poutine 4y agoI have a sol-ark 12k which allows for grid isolation and a bunch of batteries.
- nerdbert 4y agoUntil a couple years ago we had a gas-fired tankless water heater which used a single D-cell battery for ignition, which had to be changed once every year or two. It wasn't connected to wall power at all.
- alvah 4y agoThere are, or used to be, Bosch tankless water heaters which used a small turbine connected to a piezo-electric igniter, no external power source required ever.
- hinkley 4y agoBut you need a blower or pump in order to circulate heat in a house. Hot water is better than nothing but it won't keep your fish from freezing.
- nemo44x 4y agoWhy not install heated floors? That would be my choice in a new build.
- 2rsf 4y agoWhy? heated floor are a little more efficient in heating and for some are a little more comfortable, but from my experience they are also slow to react so it's harder to control the temperature when the weather changes daily for example in the spring or automn.
- nemo44x 4y agoThey’re much more efficient (and comfortable imo) than other systems. You’ll see pretty big costs savings. But yes, you need to be in a climate that sees long, cold winters to get the best of them I guess. Or if your home has lots of tile/stone/concrete flooring. You’re right though, they take awhile to heat up and if you’re in a place where you may need heat at night and AC in the day, they won’t be ideal.
- 2rsf 4y agoPretty big costs savings compared to what? if you compare radiators to floor heating, both connected to the same heat pump system than the savings are not significant
- nemo44x 4y agoIt's because of efficiency. The entire floor becomes a radiant source - this is a massive thermal source. A heat-pump is only part of the equation. You need to deliver the heat still. A radiator is generally a bad way to deliver heat from a heat pump. Radiated floors are much better. About 40% more efficient than radiators from the same heat pump. Not to mention radiators are sort of lousy ways to heat a room anyways. They take up space and leave one side too hot and the other too cold.
- poutine 4y agoIt's expensive and it doesn't cool. Also doesn't circulate the air. I have some fancy filters and humidifiers as part of the system I'm putting in.