Questions tagged [central-heating]

For questions regarding a central heating system for the home. The system consists of a furnace or boiler and a method to distribute the heat throughout the home.

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1answer
25 views

Baseboard water heat not heating one room; Rest of zone/house is good

I have a baseboard water heating system set up in three zones. One zone consists of two bedrooms and a bathroom at one end of my house. The thermostat for that zone is in the hallway connecting the ...
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1answer
53 views

Why do radiators need bleeding? Where does the air come from?

I had to bleed a radiator for the first time recently. This made we wonder where the air that gets trapped in radiators comes from. I'm not looking for a specific cause for my own heating system, ...
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1answer
40 views

Viessmann Vitodens 200w, LCD screen stuck on

We have a Viessmann Vitodens 200w boiler and the screen on the weather compensating control unit (Vitotronic 200 Weather Comp Kit HO1) is stuck with everything lit up. I can’t find anything in the ...
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2answers
84 views

How can I use a pre-installed A/C unit for heat?

I just bought a house with a relatively two-year old A/C unit (installed 2018) and a natural gas furnace connected to central air. I'm interested in using the A/C unit as to heat the air in lieu of ...
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1answer
27 views

Tempstar 2 stage furnace restarting every 7 minutes - not going into high

I have a tempstar 9MPT model based furnace. Also sold under a number of other brands - comfort air, etc. It is a two stage heating with a PSC motor high efficiency furnace. After about 7 minutes of ...
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0answers
26 views

Trickling noise from thermal store

First off, I'm in the UK. I've provided links to some terms I've used in case they're not universal. I recently installed a used thermal store. It's set up as a vented S-plan system. When the valve ...
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0answers
32 views

Room Thermostat, Cylinder Thermostat and Central Heating pump wiring

I have a water cylinder that is heated from a wood burner with a back boiler. The cylinder is also connected to the central heating system (via coil inside the cylinder) and a separate pump. When ...
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0answers
32 views

HVAC duct sizing

I have a 4 ton American Standard electric forced air furnace (with no A/C - just heat) with a single speed blower motor, circa 2006. My supply main trunk is 12"x20". The return side of the system ...
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2answers
50 views

How should I ground a heat pump capacitor?

Where do I attach ground wire on capacitor that has no designated ground connector?
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1answer
45 views

Frozen heat pump for 1st time

Yesterday I changed the blower motor capacitor on our heat pump and some general cleaning. Heat Worked “great” through the night. This morning coils covered with ice. Q.Could it be wrong Capacitor; ...
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0answers
41 views

Environmentally friendly methods for heating a large addition

I live in Southern California, and am writing this at my desk in the large family room, which is about 45 sq.m. (500 sq.ft.). This room was added on to the house, and our natural gas furnace doesn't ...
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0answers
19 views

Hookup Nest Themostat & Heatlink

I'm in the UK and trying to install a Nest Thermostat & Heatlink at home to control my hot-water and central heating and I'm having a few issues working out how my existing setup works so I can ...
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1answer
35 views

How to reduce noise on a warm air duct?

My heatings system is based on 80mm inox tubes. The air is warmed at a central location and distributed through these ducts.t The issue is that the air pump is a bit noisy. This noise is transported ...
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0answers
25 views

Can I get a wireless boiler enable signal?

I have wireless thermostats which are connected to my wiring centre which controls the pump and valves for the underfloor heating downstairs. On my wiring centre I have a boiler enable signal, which I ...
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2answers
82 views

What heating system do I have, and what can I do about water pressure in my shower?

New homeowner (UK based) and getting to grips with all that comes with that. I previously only lived in a flat with a standard combi boiler, my new home seems to have an older system in place ...
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0answers
24 views

Is my CH/HW fully pumped? Is it two-pipe?

I'm having problems understanding the exact configuration of the CH/HW piping in my house. In particular, I have to understand where and how to place piping for additional radiators at the upper floor....
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1answer
59 views

Convert gas wall heater to inset fireplace

This wall heater is running on gas and has an electrical control. It is actually in front of the brick vent behind This is in the attic as the vent connecting on top Obviously this wall heater is ...
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2answers
32 views

Why does a system boiler with hot water cylinder not use a diverter valve?

I understand that it doesn't need a diverter valve... But I was thinking, couldn't the system be more efficient with one? For example, the central heating could run at a low temperature (35°-40°) and ...
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1answer
83 views

Why does my thermostat show code 'PF' after running the fan or A/C?

After running either just the central HVAC fan, or the central HVAC AC for just a few minutes, the Bryant thermostat (Model TSTATBBPB101, C Wire attached) screen momentarily shows "PF", and then goes ...
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1answer
43 views

Running AC/Heater when washing a cleanable filter

I have a heat pump/AC system with a washable air filter. I was told to clean the filter out and run water through it once a month. He told me to let the filter dry for 3 hours before replacing it. I ...
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0answers
56 views

HVAC Exhaust Routing Question

Just wondering if I could get some advice on the optimal way to route the HVAC Exhaust piping. Enbridge replaced the supports underground and before they turned the gas back on they did an inspection ...
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1answer
86 views

Goodman furnace - C Wire connection

I'm trying to connect the C wire in my Goodman furnace in order to install a new thermostat. I've read all the posts on this forum about this specific issue so my question is whether i'm in the right ...
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4answers
134 views

Are individual electric heaters more efficient to operate than an electric boiler?

(Edited to provide additional info) My wife is looking to buy an old house (I'm guessing 19th century) that'll need a lot of renovating, including the heating system. Renovation works will include (...
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1answer
72 views

Flexible round duct - What to use

I'm re-routing some 10x3.25" duct through a bulkhead in my kitchen. Planning to change over to 6" round duct for a 4' segment that is relatively straight (no 90s). It was my intention to use non-...
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1answer
78 views

Vaillant aquaPLUS filling loop

I have to repressurize my Vaillant Aquaplus gas boiler, and I couldn't understand from the manual where exactly the internal filling loop should be fitted. The water pipes don't have any valves ...
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6answers
4k views

Is Electric Central Heating worth it if using Solar Panels?

I understand that electric heating is less efficient and comparatively more expensive than gas heating (propane or natural gas), but considering I live in Texas (a lot of sunlight) and I intend to ...
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0answers
21 views

HVAC: attic heat loss

Should a ventilated attic (w. Openings in the eaves) be warm in the middle of a cold winter that has a heat pump installed as the heating system for the living area below. If it is warm does that mean ...
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2answers
57 views

How do I determine why a sealed central heating system is losing pressure?

I'm currently trying to deal with a sealed central heating system in which the pressure is dropping by 0.2–0.3 bar per day (this is obviously far too fast, because the intended pressure for this ...
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1answer
37 views

uncontrollable heating in multi unit apt

I have a 6 unit 2 story apt bldg which has only one basement furnace controlled by one thermostat from the first floor apt #1. The duct work has dampers to each unit. the problem is that the temp in ...
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2answers
351 views

HZ432 and no heat in one zone

I have 4 zones... The following lights are on the HZ432: Heat 1 - red Heat 2 - red Heat 3 - no light Zone 1 - yellow Zone 2 - red Zone 3 - red Zone 4 - red I have heat in 3 zones, but not in one of ...
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0answers
36 views

HVAC System Making a “Turning Over” While Heating

My HVAC system is running for a very short time, then turns off and then makes this turning over noise. It's a 10 year old Amana heating and air conditioning unit. The sound seems to be coming from ...
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1answer
5k views

Central Heat Won't Turn On When I Raise the Temperature on Nest Thermostat

I'm sure my heater is working. It's 47 degrees outside, and I'm only a little cool inside. My Nest thermostat is set to 67 degrees. The screen on my app (which agrees with the thermostat) is shown ...
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1answer
135 views

Is there a more environmentally-friendly alternative to using oil to heat a house with oil heating installed?

I currently live in a house (in the UK) which is too remote to be connected to the mains gas supply, with an oil tank which is used for central heating. This is obviously not great for the environment,...
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2answers
534 views

Can I just cut power to a central air and heating system, or should I follow a shutdown procedure?

I am going to install some NEST thermostats. The directions say that I should turn the system off by turning off the power to it. However, I'm worried that an abrupt power cut will be damaging. Do I ...
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1answer
3k views

Are these red lights on my Honeywell HZ432 why my bedroom isn't blowing in heat?

I just moved into a new multi-family house with central heat/AC and the 3rd floor bedroom doesn't seem to warm up very well. When the thermostat is on, I don't feel hot air blowing in from the vents ...
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1answer
202 views

How to improve heating/AC flow in second floor?

We moved into our house about a year ago and the second floor in my house never get enough heat in winter or cold AC in the summer. Our first floor can be a 72F deg while our upstair stays at nearly ...
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1answer
62 views

Why does my radiator only come on when other radiators are on too?

We've just fitted smart TRVs and since doing so we've noticed that the radiator in our bedroom is usually cold, even though according to our settings it should be heating up. It does heat up a little ...
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0answers
63 views

Heating System Premature CutOff / DIY Options?

I've collected all of the facts about my system and the problem we are seeing. We have two external air pump units outside the house and a Rheem furnace (GH36S, 36000 BTU) that appears to be working. ...
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1answer
385 views

Glow Worm Flexicom HX boiler F11, F22, F25 Error codes

This is less of a question, but more of a list of things we tried to stop the frequent F11, F22 and F25 error codes appearing on our Glow Worm Flexicom HX boiler which would stop it from functioning. ...
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1answer
5k 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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1answer
134 views

How can we prevent the upper floor in a split-level home from getting too warm?

I have a split level home. Main floor contains living dining and kitchen. 8 stairs up to top level with 3 bedrooms and a bathroom. Down 6 steps from main level to family room and from there down ...
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1answer
41 views

If I only want to pressurise central heating not hot water should I get a regular boiler or system boiler

My boiler has packed in, the heat exchanger has failed and the consensus is that was due to sludge, gunk in the system, also consensus is would be better to pay a bit more and get a new boiler and ...
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1answer
40 views

Wall grille that fits one step stair

Between my dining room and living room upstair area, there is one step down and there is a wall grille that is 5.5" tall. What drives me nut is there is no 14x5.5 grille anywhere. There is either ...
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2answers
144 views

Stuck valve on heating system

I've just moved into a new house and the heating doesn't work, hot water isn't circulating. I've narrowed it down to a stuck valve on the inflow to the water pump, it seems that the valve is closed. ...
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0answers
43 views

Dual energy controller 2AC02700701 runs heat pump with low fan only

I am running a central heat system that uses a heat pump as stage 1 and a gas furnace as stage 2. The thermostat is not directly connected to the furnace and heat pump motor, instead to goes through a ...
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2answers
99 views

Thermostat White-Rodgers 1F82-261 switches to stage 2 heat for no apparent reason

I am running a central heat system that uses a heat pump as stage 1 and a gas furnace as stage 2. The thermostat used is the White-Rodgers 1F82-261 which supports 2 stages of heat. When using regular ...
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2answers
521 views

Is the ventilation in my utility closet a construction mistake?

With colder weather here in Northern Colorado (down to 22° F) my Goodman 90% efficiency furnace (GKS90453BX) came on for the first time in the (ca. 2005) home that I recently moved into. The furnace ...
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0answers
46 views

What is the function of this valve marked VB in my central heating

I've been trying to track down why one of my radiators in a newly acquired house has no flow. After finding that one side of the radiator is blocked off, further investigation located a motorised ...
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1answer
469 views

My AC and Heat systems are separate, Can I wire one or both fan(only) controls to my thermostat?

My house used to have just Forced Air heat, but a year and a half ago, I had central air installed. When it was installed I had questions about the wiring they weren't addressed to my satisfaction. ...
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1answer
64 views

What type of tradesman do I need if the downstairs of my house is too cold

I have bought a home and in winter the extremities of the ground floor are very cold. The original part of the building is the centre, and it has been extended in the front and the back. The main ...

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