Questions tagged [heat]

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21 votes
6 answers
10k views

How to get rid of CO₂ in a house with A/C in hot summer?

Recently, I've been measuring the CO₂ concentration during multiple nights and the levels in the bedroom where I sleep are very high and unhealthy (over 1600 ppm). I use an AirVisual monitor, which ...
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  • 313
7 votes
1 answer
1k views

second window for toilet on rented apartment

I rented my apartment in the summer, now with the cold weather starting (Australia). I noticed how cold the toilet window makes the apartment, there is zero isolation, and is basically a window with ...
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6 votes
3 answers
2k views

Insulating a wooden shed to provide strong heat rejection

I'm getting a large new shed built in my garden and I'd like to insulate it to make it a bit more comfortable to work in. The shed comes with stud framework on the walls, so my plan is to use OSB to ...
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5 votes
1 answer
24k views

Why does my furnace only work after power reset?

I’m having issues with my furnace sometimes not kicking on. I hear the furnace start, But then it will not fire. However, If I go down to the basement and flip the power switch off and on the ...
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  • 51
5 votes
1 answer
325 views

Will the concrete slab in a partially heated shed conduct a lot of heat to the unconditioned area?

I have a barn-garage type outbuilding (I believe it was a small barn originally; it has that kind of tall, roomy upper loft). It's about 40 by 20 feet. It's got a concrete foundation and the lower ...
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4 votes
4 answers
3k views

How to prevent heat loss over a recessed light?

I have a recessed light installed in a sloped ceiling - no attic space over it. On a cold morning when there is frost or snow on the roof and I stand outside the house, I can see a warm spot directly ...
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  • 255
3 votes
3 answers
19k views

How can I heat up my apartment to kill bedbugs in Southeast Asia?

I have a bedbug problem in my apartment and I want to fix it myself with heat. (I do not want chemicals sprayed around.) Apparently, getting a room to 140 degrees for two hours is sufficient to kill ...
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3 votes
2 answers
3k views

Gas furnace air is cooler (but NOT COLD) during bitter cold days - why?

I have a Lennox central gas furnace. It is only about 3 years old, and was on the very high end of the models available in terms of energy efficiency and such. I sprung for a more expensive model ...
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  • 153
3 votes
1 answer
946 views

Heat Damage to Laminate Counter-top Near Gas Range

While deep cleaning our new home, after closing, my wife and discovered what looks like some heat damage to the counter-top next to the gas range. The house was fully renovated about 2 years ago, ...
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  • 359
3 votes
2 answers
19k views

Are there optimal positions for A/C and heat register grills to be facing?

I noticed a while ago that some of my A/C and heat register grills are facing the walls and not the room (the insides of the curves on the grills face the walls) in some rooms but not in others. My ...
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  • 475
3 votes
0 answers
2k views

Trane Weathertron Stat to Honeywell RTH2510

I have a Trane Weathertron thermostat thst I am replacing with a New Honeywell RTH2510. This is a heat pump with auxiliary electric heat. The wires on the Tran thermostat are. R, T, O, G, Y, B, X2 ...
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2 votes
3 answers
16k views

Is it bad to close furnace dampers in order to balance temperatures seasonally?

I have a two story home. As such, it's always hotter on the second floor than the first floor. As advised by many articles and how-to videos out there, I usually close the dampers in the ducts leading ...
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  • 125
2 votes
2 answers
68 views

Curtains for a non-air-conditioned apartment in the tropics

We live in Mumbai - West coast of India, tropics. Summers are from March to July with temperatures reaching early 40 degree Celsius and a lot of humidity. It rains from July to September with ...
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  • 133
2 votes
1 answer
2k views

Can dryer vent touch ABS pipe?

I am installing a dryer vent (using rigid aluminum vent). The vent will be running along the same path as a 1.5" ABS pipe (which is used as drain vent, so no water flows through it). Would it be a ...
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  • 23
2 votes
2 answers
175 views

Is it safe to set my water heater tank to vacation during winter time? What else can I turn off to save heating bills during winter?

Is it safe to turn set my water heater tank to vacation during winter because I am mostly away from my house? I live in Canada. What else can I turn off to save heating bills during winter when I am ...
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2 votes
1 answer
102 views

Dangers of Heating a Bedroom up to High Temp

In order to kill bedbugs and clothes moths, I was thinking of putting portable heaters in my bedroom and raising temperature to 120 degrees for an hour or so. If I take out thinks like alarm clock ...
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2 votes
5 answers
6k views

PEX Pipes running along Ceiling on Inside Wall

My landlord fixed a leak from the baseboard heating system using a plumber who decided to run the red [guessing PEX pipes] from the water heater/boiler to the baseboards along the ceiling. The pipes ...
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  • 21
2 votes
1 answer
23k views

Heater will not shut off when it reaches desired temperature

I am just noticing this running the heat. If I set the thermostat to 70 it will run and run and the temperature reads 70 but the unit does not shut off. If I turn it up to 72 and then when it reaches ...
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2 votes
1 answer
78 views

Ceiling radiant heat

Each room has its own thermostat and heater. The bathroom hasn't stopped but isn't working correctly. When I touch the ceiling I can feel heat but the room doesn't get warm. I'm trying to fix this ...
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2 votes
2 answers
4k views

One shower runs out of water in 7min.. Other stays hot forever!

I live in an apartment complex where the rooms/bathrooms are identical, and there is one gas water heater for each unit. My shower will stay hot as long as I want it to, but my roommate has to rush ...
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2 votes
0 answers
54 views

How to wire a 2 stage heat pump with gas furnace

I bought a new house last year and this is the first winter I've been in it. It have a gas furnace that we've been using as the only heat source. The other day, I went to clean the condensor coils and ...
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1 vote
2 answers
377 views

Understanding electric heaters power

I have tried a few electric heaters but they are not strong enough. My electric stove emanates more heat that those portable electric heaters. So Perhaps I am not looking for the right thing. What is ...
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  • 169
1 vote
3 answers
12k views

On a true 60 amp 240 volt circuit will each side of the breaker carry more than 30 amps if required?

If my distribution panel on my boat is wired 240 v 60 amps max and there are many 120 v 15 a circuits, if one side of the 120 v panel starts to draw more than 30 a, will the breaker compensate by ...
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  • 11
1 vote
3 answers
127 views

What are some quick and affordable insulation solutions for a shed?

I'd like to use my wood shop in the winter. It's a detached, 20x14 shed and I installed a 5000watt garage heater already but it takes a while (hours) to heat up and it's probably very wasteful since ...
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1 vote
1 answer
163 views

Dry sauna using heat gun

Thinking of building a small one person dry sauna and just running a heat gun blowing into bricks or rocks inside the sauna to heat it to 180F. Any reason this would be dangerous? Like the plastic ...
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  • 113
1 vote
2 answers
5k views

Any suggestions for incorrectly-wired thermostat?

I foolishly got myself into this mess. Any suggestions? 1923 house with original steam heat (gas). The addition (~1998), has hot water (baseboards). I tried to replace the addition's thermostat, and ...
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  • 249
1 vote
5 answers
127 views

Solar? Lots of room for panels, so should I ditch oil? [closed]

First post for me. Long time reader. I'm in south west Massachusetts. I just bought a new two-story home. 9ft ceilings. With garage, it is about 2,600 sq ft plus 2,000 square feet of garage space (...
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  • 11
1 vote
2 answers
7k views

heat pump condenser fan not running in winter

it is -5 degrees outside. Our thermostat is set at 70 degrees and the house heat is 58 degrees. the fan blade on the unit outside is not moving. the hvac system inside has a sticker on the unit. the ...
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  • 11
1 vote
1 answer
112 views

Can I put a box fan in a chimney to help circulate out hot summer air?

I have a classic brick chimney for a wood fireplace only (i.e. no hot water tank or other things sharing the stack). In peak summer heat, the interior of the upstairs is well above the exterior ...
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  • 63
1 vote
1 answer
230 views

How to find source of leak in heating pipes under concrete / glued floors?

Update 2021.01.11 In case this helps anyone - I was able to trace the leak and make the repair in the end. Steps were this: Locate leak as closely as possible by isolating areas of the heating system ...
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  • 277
1 vote
1 answer
71 views

Home Heating Efficiency

See a similar question I posted a few years ago: Heat pump minimum compressor temprature I have a custom built new construction home, but I was not involved with the build process, so I don't know the ...
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  • 715
1 vote
2 answers
109 views

Garage Sub-Panel Addition

I want to add electric heat to my 750 square foot garage by way of an overhead 7.5 or 10 KW heater. Adding a sub panel would allow me other options for power for the following: Heater 220V at either ...
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  • 11
1 vote
2 answers
331 views

Gas Furnace only, is Y wire needed?

I have force air (propane furnace). I would like to upgrade to a new "smart" thermostat, but they didn't run a C (common) wire which is required for most of these units to run properly. I do however,...
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  • 115
1 vote
4 answers
2k views

Why does my house feel toasty when it's very cold outside, but cold when it's only a little chilly out?

My house has gas-powered hot-water radiators for heat. Ever since we moved in, I've noticed that if the temperature is just a bit chilly outside (40°F to 50°F), the house feels very cold and everyone ...
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  • 201
1 vote
2 answers
6k views

3 zone boiler heat, one zone is too hot

I have a 3 zone boiler heat system, one t-stat for each floor. It's worked fine for years except twice in the past few months. The first time I was out of town and my wife called and said the upstairs ...
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1 vote
2 answers
10k views

Why is it so cold downstairs?

My house has a concrete slab foundation and the floor in the kitchen and living room is all tile. It is always freezing downstairs in the winter and I'm wondering if this is due to the floor or maybe ...
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1 vote
1 answer
77 views

Can I slow the formation of cracks in a furnace by running lower temperatures?

Just had a tech out today. Gas pressure was up way higher than it should have been so he reduced it (he said it was a 7 something and it should've been 3.4?). CO detectors not going off but they are ...
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  • 11
1 vote
4 answers
518 views

Adjusting Steam Radiator

We recently moved in to a 1934 home with steam radiators. Our upstairs bedrooms are cold compared to the first floor. A room adjacent to our kitchen is generally warmer than the rest of the house. Can ...
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  • 11
1 vote
1 answer
161 views

Replacing old 2-pole line volt thermostats in a 120V hydronic heating system - is this configuration safe and acceptable?

I am replacing several old mechanical 120V 2-pole thermostats each of which controls both a blower fan (which blows air over hydronic coils to push warm air into the room) and a single central ...
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1 vote
2 answers
850 views

Should I COMPRESS fiberglass OR use foam insulation?

I have a room made of hollowed concrete blocks that I framed by mounting 2x4s, wide side against the wall. This gives me a 1.5in depth cavity to fill with insulation. Should I use an r19 fiberglass ...
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  • 558
1 vote
3 answers
52 views

Hot water heat zone valve

The hot water baseboard in my apartment stays warm when the heat is off. It is working but does not completely turn off. The head on the zone valve has been replaced. Is this normal or should the base ...
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  • 11
1 vote
1 answer
683 views

Why is my thermostat turning the heat on too soon?

I have recently come across an issue with my thermostat and when and how my heat comes on. My thermostat seems to be an old round Honeywell. I set my temp at 65 typically. As of last night my ...
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1 vote
1 answer
70 views

Rooms not at 69 F set temp

It is 5 F outside; however, I have not had any problem with getting desired heat in rooms, until today. We have gas heat in our house. I hear water thru the hot water baseboard heaters in every room. ...
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  • 11
1 vote
1 answer
118 views

Fireback with gas line

I have an old brick fireplace that had a gas line installed in it years ago. It works fine, but doesn't produce much heat when it's turned on (most heat goes up the chimney). I've read that a cheap ...
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1 vote
1 answer
988 views

preventing pipes on an outside wall from freezing

I remodeled my cabin to a four season home. My pipes have frozen twice. I removed casing because I was planning to install heat tape. I noticed my builder had not put any installation behind the pipes....
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1 vote
1 answer
2k views

Honeywell VR8300A3500 Single Stage Heat Gas Valve to Ecobee3 with C wire

Hey everyone have a quick question regarding a honeywell VR8300A3500 Single Stage Heat Gas Valve and the introduction of a Ecobee3 wifi enabled thermostat with a "C" wire. just want to make sure i am ...
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1 vote
1 answer
3k views

Why is my heat pump blowing cold air?

Two days ago our heat pump start putting out cold air and it's 30 degrees outside. We changed to emergency heat, but we don't know what is wrong. On regular heat it blows cold air. On emergency heat ...
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  • 31
1 vote
2 answers
2k views

Optimizing heating in a heat-pump + electric resistive system

Outside, I have a LENNOX 13hpx-036-230-17 compressor: Inside, the air handler is a LENNOX CBX25UH-036-230-1: The air handler lists 36,000 BTUH cooling capacity, with r410a at 450psi, cust part # ...
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1 vote
1 answer
417 views

How do you troubleshoot a baseboard heater that is not heating up?

I have baseboard heat and we are not getting heat on one room. Can't bleed air from the baseboard itself. How do I troubleshoot the issue?
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1 vote
0 answers
41 views

Best material to protect concrete outdoor retaining wall from BBQ/pizza oven built onto it

Note - I've read Should I insulate my pizza oven between the firebrick base and concrete? and Will a slab poured with mortar stand up to service under a pizza oven? but they aren't rerally what I need....
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  • 610