17 votes

Can I use electric radiant heating as primary heating?

You can. But don't. Resistance electric heating, no matter what the fancy name, is really a giant toaster. Toasters are wonderful things - for making toast. But you use a toaster for a few minutes a ...
manassehkatz-Moving 2 Codidact's user avatar
8 votes
Accepted

Why does my heat pump "blow" at warm (even hot) outdoor temperatures? Should not it be inactive?

The heat pump is also responsible for heating hot water (also a feature), is that the reason for the blowing? Yes, hot water in a the tank (which is well above ambient temperatures) will slowly cool ...
ratchet freak's user avatar
7 votes

Can I use electric radiant heating as primary heating?

I had our oil-fired hot water baseboard (HWBB) heat removed when we had our major renovation done, went with all-electric (heat pump), and regret not leaving the hot water BB in. The heat pump works ...
SteveSh's user avatar
  • 6,882
5 votes

How do I completely drain and decommission hydronic radiant heating system?

I would approach this as if it was a sprinkler system... with compressed air. If you can, work each circuit individually. If not, work the longest or furthest ones first. You could also simply use a ...
isherwood's user avatar
  • 137k
5 votes
Accepted

Making changes to home that has in floor radiant heating

You'll either need to accurately locate and avoid the pipes, or be prepared to break additional concrete and repair the pipes if you hit them when drilling holes for plumbing/electrical or fastening ...
Ecnerwal's user avatar
  • 214k
4 votes
Accepted

Electric infloor heat with solid hardwood floors - should the wood feel warm?

Tile will always be a better conductor of in floor heating than wood. The more important question is: "are both rooms getting to desired set-point?" If so, you don't have a problem.
George Anderson's user avatar
3 votes
Accepted

Can I configure a two-stage thermostat to manage two heat systems?

Comment, not an answer (but it might be): [I am new and won't let me 'comment' until '50' reputation; but it DOES let me 'answer', go figure...] Correct, it is a No-no to cross transformer supplies (...
troubleshooter's user avatar
3 votes
Accepted

Can I install wide-plank solid hardwood over radiant floor heat?

There are lots of resources covering this topic, and since your question is rather broad I'm inclined to refer mostly to them. In general, you can install hardwood over floor heat if: Subfloor ...
isherwood's user avatar
  • 137k
3 votes
Accepted

Using a Radiator Space Heater to Support HVAC system

Will using an electric space heater improve the efficiency of a heat pump? No. When the temperature drops below the operational range of the heat pump, resistive heaters are used to provide heat. ...
Ed Beal's user avatar
  • 103k
3 votes
Accepted

Least invasive way to find foundation footings under basement slab?

There’s several issues you’ll need to determine to “dig-out basement” 1) location and type of all existing footings, 2) load on existing footings, 3) angle of repose of soil, 4) water table. 1) In ...
Lee Sam's user avatar
  • 23.2k
3 votes

Is this a "fill" valve and how do I use it?

That is the drain valve, and yes the screw on top opens or closes the valve. Normally a water heater is filled using the normal supply piping on top, by opening the shutoff valves and opening some ...
Josh King's user avatar
  • 641
3 votes

Can you use a heat pump for hydronic radiant?

It's certainly possible - whether you can get someone in your area to install and service it, and whether you can afford it, are two entirely different questions. Air source heat pumps that are ...
Ecnerwal's user avatar
  • 214k
3 votes

Can I use electric radiant heating as primary heating?

My retired parents had electric base board heat and liked it. A small ( 1000 sq.ft) new , well insulated house in a mild climate; northern Arkansas. Each room could be set at a different temperature. ...
blacksmith37's user avatar
  • 8,291
3 votes

Can I use electric radiant heating as primary heating?

Stepping away from oil is awesome for national security, as current events certainly show. (using less oil allows us to support our allies so they are not dependent on fascist governments, which seem ...
Harper - Reinstate Monica's user avatar
3 votes

Radiant heating under an enclosed balcony?

If the floor is built with concrete blocks like so: Then... there's a lot of air in there. If you put the hot water pipes below it, this won't conduct heat well enough for it to act as underfloor ...
bobflux's user avatar
  • 9,243
3 votes

Radiant heating under an enclosed balcony?

How well insulated is the full enclosure? The balcony construction sounds like it's a giant thermal bridge, which would mean with a slow system like that (or any heating system in general), a fair ...
MiG's user avatar
  • 2,370
3 votes
Accepted

What breaker size do I need to power radiant heat?

This sort of thing is normally done with two separate 20A circuits, where the load is 16A or less per circuit, but you have some oddball heat units just enough bigger (that extra 0.4A per heater) that ...
Ecnerwal's user avatar
  • 214k
2 votes
Accepted

Is it possible to wire an electric radiant floor as a heat pump in my Nest thermostat?

Just remembered that I never circled back here. I was able to get this behavior by wiring the floor as "Stage 1" heating and the main furnace as "Stage 2". To do this, the white wire from the floor ...
Sealander's user avatar
  • 131
2 votes
Accepted

In-floor radiant heating hooked up to hot water tank in new home - questions about how it works and operating it

Here is the way a system like yours should work. The heating tank, tank #2, is set to maintain a set water temp. That temp is determined by how the water temp is maintained. It could have a ...
d.george's user avatar
  • 12.4k
2 votes
Accepted

Is this a "fill" valve and how do I use it?

That is the drain valve and you only need to use it in the event that you should have to drain or empty your water heater. It is opened and closed by turning the screw on the top of the valve. ...
Alaska Man's user avatar
  • 13.6k
2 votes

Inground Conduit Box for Driveway Snow Melting

If in only 1 pipe is there a derate for the number of current carrying conductors? In the U.S. I would be using thhn/thwn wire, but with 25 amp actual draw I would need to upsize the wire to #8 ...
Ed Beal's user avatar
  • 103k
2 votes

Alternatives to forced hot air in-wall units

I'm currently storing 9 240VAC 500 watt radiant (or infrared) panels; not sure if I'll use them or not, but they certainly exist in the US market. Mine were taken out and replaced with an oil-fired ...
Ecnerwal's user avatar
  • 214k
2 votes

heater wire 120v 2-wire. one side ribbed and the other white writing?

The ribbed side is the neutral (actually called grounded conductor, not to be confused with the equipment grounding conductor). NEC 400.22 Grounded-Conductor Identification. One conductor of ...
NoSparksPlease's user avatar
2 votes

Can I configure a two-stage thermostat to manage two heat systems?

I have almost the exact same setup as you (hydronic floor heat and air handler for backup heat) and mine works with one tstat just fine. So while you aren't asking for too much from "a" ...
George Anderson's user avatar
2 votes
Accepted

How can I handle excessive pressure in a water heat circuit?

You need an expansion tank on a closed-circuit hydronic loop. You'll also need air vents for removing the dissolved air when it comes out of solution as the water (or antifreeze) heats. These are ...
Ecnerwal's user avatar
  • 214k
2 votes
Accepted

SunTouch underfloor heater without floor sensor?

Because the radiant floor could get too hot while the external temperature sensor still indicates below required T. This could damage the element or part of the floor. The underfloor heating (water) I ...
Solar Mike's user avatar
  • 27.4k
2 votes
Accepted

Can I replace one hot water radiator with electric underfloor heat?

is it mainly to feel nice on your feet or can it be used to heat the room? It is used to heat the room. How it feels depends on how well the building is insulated. If it is well insulated, then the ...
bobflux's user avatar
  • 9,243
2 votes

Electric infloor heat with solid hardwood floors - should the wood feel warm?

The floor feeling warm is actually a sign your room isn't well insulated: The underfloor heating has to compensate for heat losses. These depend on the quality of your insulation. The worse your ...
bobflux's user avatar
  • 9,243
2 votes

Replacing thermostats for in-floor heating

This looks like an old, typical 80% efficient gas boiler, non-condensing. And forget HVAC, it's just H. Before you get all fancy with thermostat control, remember that in-floor heating systems ...
MTA's user avatar
  • 11.2k
1 vote

How to properly pipe a hydronic heating system

This isn't an "answer" but a caution. I have a hydronic, in floor heating system in my house and let me tell you, there is a LOT of design and engineering to do to get this right. Even the ...
George Anderson's user avatar

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