For general questions on heating in your home.

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4
votes
1answer
6k views

Replace two-wire thermostat

I'm replacing an old mercury thermostat with a digital one. The new unit has 7-8 connections (labeled w1,wh,r1,rh,y,c, etc.) and a bunch of instructions about how to connect similarly labeled ...
5
votes
7answers
15k views

How can I efficiently heat a pool?

Continuously heating a pool can be expensive and the best ways to lower the cost are to have a cumbersome pool cover in addition to the equipment needed (solar or an AC-like heat pump). There must be ...
3
votes
5answers
16k views

Why does my furnace need frequent power resets?

I have a NOMA Programmable thermostat attached to my furnace. The set point is usually around 21 degrees, and the room temperature is reading around 17 degrees. The furnace is not coming on. ...
1
vote
2answers
4k views

Why is my radiator not getting hot water or have air in it?

All except one radiator are working fine. The one that stays cold is in the room with the thermostat, so the system keeps running more than it should. I tried bleeding it and just water came out. I ...
13
votes
2answers
20k views

What are the pros and cons of installing a roof heating cable?

Had some roof work done last year after mother nature abused my house by way of an errant tree branch. I had always suspected my roof had poor ventilation, most notably when I wound up with a 200 lb ...
2
votes
4answers
2k views

How can I measure the r-value of a wall?

What is a reproducible test to measure the r-value of an exterior wall? Or even a specific spot on a specific wall? It needn't produce an absolutely certain result, but a good estimate with known ...
8
votes
2answers
20k views

What's the best way to keep my garage from freezing?

I live in Colorado. My 1950s house has a one-car attached garage that was built in the 2000s. The walls that are not shared with the house are not insulated: the studs and sheathing are visible from ...
2
votes
2answers
814 views

Alternative to electric heaters in bedrooms?

I would like this system serviceable, cost effective & relatively maintenance free. I just don't know the best way to go about it. I am sick of using a oil filled heater over winter. My original ...
1
vote
1answer
10k views

Should I add a return air vent in a refinished basement?

We are refinishing our basement, and are nearing competition. The walls are drywalled, and the ceiling is dropped. There will be about 500 sq ft of finished space, including a full bathroom, and ...
11
votes
6answers
1k views

How can I stop Lego bricks from falling in to a register?

My kids like to play with Lego bricks on the floor, and sometimes a small piece will fall in to a heating register. Sometimes I can pull them out, but usually they fall too far, and there are sharp ...
8
votes
4answers
22k views

What type of space heater is best for an uninsulated garage?

I'm planning on applying stain and polyurethane to some furniture I recently built. I've been thinking about getting a space heater for my uninsulated garage, both to help the poly cure, and for my ...
7
votes
4answers
9k views

Is it an easy task to replace a wall thermostat?

As above, is it an easy DIY job to do this safely? In my research into the above it has become apparant that I should consider replacing the old thermostat with a programmable one for energy savings. ...
4
votes
3answers
11k views

How can I prevent my HVAC condensate drain line from freezing?

Last night, my heat (forced air) suddenly stopped. Today, a plumber figured out that my heater is 90% efficient, produces lots of condensate, and the drain line had frozen. We went outside and saw ...
4
votes
2answers
2k views

How do I change the time on a Potterton EP 3000 clock?

I turned the power off and when I turned it back on again, the clock of my Potterton EP3000 was reset, and now the heating comes on at the wrong time. I dont have a manual for it, so I was wondering ...
2
votes
2answers
29k views

Why does my pilot light keep going out?

My furnace pilot light keeps going out so I changed the thermalcoupler now the furnace will come on and heat up to the degree set on my thermostat, then the pilot goes out and the furnace will not ...
2
votes
1answer
3k views

Potterton EP3000 -> Horstmann C27 boiler programmer wiring

I'm in the UK, using an ancient tempermental Potterton EP3000 boiler programmer, but I have a brand new Horstmann C27 which I'd like to replace it with. Apart from the mains supply, there are three ...
2
votes
3answers
5k views

Combination boiler pressure zero after heating

I generally don't notice a performance problem with the boiler, but after I run the heat to the radiators and turn the boiler off, after cooling down the the pressure gauge shows zero. I can easily ...
1
vote
1answer
125 views

Why are my water/radiator pipes whistling when I shut down the heating system?

With winter coming up, I started to heat the house and for the first time the radiator pipes are starting to whistle when I heat and then shut down the system. I have a big house and I need to shut ...
1
vote
1answer
357 views

Master Shower Won't Get Hot Unless Another Faucet is Turned On

We have a brand new gas & electric water heater. Purchased in 2013. For some reason, when we turn on the hot water in the master shower, it only gets lukewarm unless one of the sink faucets is ...
0
votes
0answers
40 views

What could cause the heat side of our split pack heating/air unit to stop working?

Our heat side of our split pack unit (runs on propane) come on and will runs little bit but then won't come on again. We can turn it off for a while and then it will run again. What could be the ...
0
votes
3answers
3k views

Why is my Central Heating taking so long to heat up?

I'm in the UK with a small modern, well insulated, double glazed home heated by a traditional gas boiler. My heating had been achieving room stat temperature within 30 minutes but is now taking at ...
0
votes
0answers
71 views

Why is it taking so long for my house to heat up with no quality to the heat generated? [duplicate]

I'm in the UK. I have a small modern, well insulated and double glazed semi detached home which is heated with a traditional gas boiler feeding radiators and a hot water system. The heating had ...