Central PA, two story colonial, 2200 sq ft. Gas furnace is 16 and probably doesnt have much runway left. I get the efficiency argument for heat pumps in moderate climates but PA winters regularly hit teens and sometimes single digits. Am I just gonna be running aux strips half the winter paying more than gas?

Want to hear from people in similar climates who have actually lived through at least one full winter. Not the theory, the reality.

Installed 3 years ago.

House is very old and mold is an issue I've had to deal with before, and probably have to again and again

I thought replacing my oil boiler would be a simple get three quotes, pick the reasonable one, move on situation, but apparently not. One contractor said cold weather heat pumps are basically magic now, another acted like I was asking to heat the house with candles, and the third guy seemed pretty normal but recommended a midea I hadn’t really considered. my first thought was, “is this just the cheaper option he makes better margins on?” but then he walked me through the sizing, the low-temp capacity, and why an inverter heat pump matters more than the logo on the cabinet. now i’m stuck in that annoying middle ground where the lower quote might actually make sense, but I also don’t want to save money and end up needing space heaters in february. For people in a genuinely cold climate, what do you trust more the brand name, the installer’s math, or actual homeowner feedback? every contractor review I can find from 2026 sounds either oddly sponsored or really angry, and I just want one boring, honest answer.

Looking at new house, it has this heatpump for heat/ac, and wondering how it will do to keep the house at 70 deg when we have 0 deg F nights in Jan. This pump covers 2.5k sq ft. I have never heard of this brand, no idea how well it will do, how long it will last, maintenance, etc. Any comments from experienced people is greatly appreciated.

I had a TOSOT mini split installed this summer, and so far I've just been cleaning the filters every now and then. Now that winter is coming up, I'm wondering if there's anything else I should be doing to get it ready for heating season.

Do you guys clean the blower wheel and coil yourselves, or is that something you leave to an HVAC tech? Is it even necessary to do a deeper cleaning after just one summer of use?

Installed Samsung mini split heat pumps a few months ago in northern Maine. Starting to get in the cold months and just started using them to heat. I have an emporia energy monitor hooked up and it appears the compressor is short cycling. 35k outdoor compressor with 24k head in living room(also includes dining, kitchen area as is an open floor plan) and 9k in a bedroom on the same level.. Currently we only have the living room head on. It seems the compressor turns on runs for 6 minutes, shuts off for 6 mins and then turns back on repeating throughout the whole day. I've attached pictures of the energy graph. From my phone research, shouldn't the compressor only power on and off 2-3 times per hour. Mine is currently turning on and off 6 times per hour. Am I correct to assume this is short cycling which is bad for the compressor and uses more energy?

I purchased a cielo breez max to try to stop the short cycling but that I think only works if I use it with the comfy/comfy max mode. With comfy mode, I can set it so it runs until it hits 2 degrees above set point and then turns the unit off until it's one degree below setpoint. Comfy max would use an algorithm to adjust the settings to keep it at the desired temperature but I think that could cause problems considering it's a multi head unit. I'm not sure if the thermostat shutting the mini split off a few times a day is better or worse than it short cycling. Ideally I'd let to just set it and forget it at a certain temperature and not have it short cycling but if I just set it on the cielo thermostat it continues to use the Samsung internal thermostat.

Any help is appreciated! Trying to find the most energy efficient way to use this before the real cold weather gets here.

Necesito un consejo, o saber si esto le ha pasado a alguien más.

​Instalé una unidad nueva de bomba de calor GE. Después de instalarla, el lado de baja estaba marcando 90 PSI. Agregué refrigerante R454B, y no pasaba de 125 PSI en el lado de baja y 300 PSI en el lado de alta. La temperatura del lado de baja es de 68°F y la del lado de alta es de 75°F. La configuración del termostato está correcta. Cuando enciendo el modo de Enfriamiento, no enfría, y cuando enciendo el modo de Calor, sigue funcionando en modo Enfriamiento. Configuré el termostato en 'O' y en 'B', y sigue haciendo lo mismo. Por favor, ayúdenme.

Hi guys

I know usually the Flexx 36’s are paired with 2 or 3 ton coils, but I also know with the dip switches on the outdoor unit you can enable energy saving mode which makes the unit act 0.5 ton smaller so you can get 2.5T. In that situation is a 2.5T evap coil okay to use or does the unit still need a 3 ton evap? I have a 2.5T evap already installed which is why I’m asking

We just bought a house and I don't seem to find any documentation on the ACs. I have 2 Mitsubishi AC units that are connected to the same outer unit (or whatever it's called). I know that they have to be set up to the same setting, so that they don't collide.

One of the ACs seems to be slacking and there is this "off" (above the temp) sign. What does that sign mean? The unit doesn't really keep the temperature up properly, but it does start working here and there

I am investigating whether to partially migrate my house to A2A heat pumps. The idea at first is to install one on the ground floor, and one on the 2nd floor main bedroom. Middle floor would be left open for possible later implementation, and the gas heating system would stay in place.

The objective is to start the process or reducing gas usage and moving to heat pumps, starting with the most used areas of the house, and secondly the benefit of having AC in the summer is a bonus.

The first proposal I've received is for 1 x 3.5KW ducted unit in the top floor room, and a 5KW unit in the lounge (Fujitsu equipment) which will cover the lounge, kitchen and to some extent the dining room. It might be that we would need to add a second smaller unit on the ground floor at a later date if wanting to decommission gas totally. 8KW multi split unit to be installed outside, raised to higher than ground level in order to leave room for potential additional batteries on the Solar/battery install (alrady in place).

The rough idea is to use off peak power stored in batteries (or solar power) to heat/cool the house as much as possible. We have 19KWH of batteries and 7KW solar system installed, with possiblitity to increase to max 38KWH of batteries (I don't have a quote for additional batteries yet). At the moment we tend to export on most days except in deep winter as we don't need the capacity just to cover house load except when there is almost zero solar.

The all in price they quoted is £7K (including a scafollding allowance TBC).

I asked them to quote with keeping in mind that we might want to get rid of gas at some point in the next 10 years so more units might have to be added.

This is the same company that installed my solar/battery and they did a good job.

Does this roughly make sense, and if I use this units as the primary source of heat/cooling at the ground floor and top floor areas (only backed up by gas if extremely cold), what kind of daily usage in KWh should I expect? I'm assuming/hoping it doesn't use 8.5KW continuously.

hi friends. Last March we got two mitsubishi mini-splits in our 2-story, 1800 sq ft house in New England. I mostly got them for AC but they just work so damn well heating the house. I’d like advice for best practices this winter. our basement is unfinished but decently insulated. with waste heat from the oil furnace, it typically stays around 59F even with the heat pump hot water heater down there. from mid-March onward, I barely ran the furnace and the lowest the basement got to was 48F during 20F nights.

At this point I’m not interested in adding a zone or anything to the basement, but what would work best with my set up in the dead of winter to avoid freezing pipes in the basement and keep it somewhat habitable for laundry, working out, etc? I hope this makes sense. thanks for your time!

I live in south Georgia, where it is very hot and humid. We only get a handful of really cold days a year (really cold is in the teens and 20s lol). I've been reading up on ac units because ours is going out and is currently a single stage. I've read that 2 stage and those inverter or variable type units are more efficient and are better at reducing humidity, and I kind of hate how ours is either off or on full blast. The first company I called installs Daikin, but they pretty much only install the single stage models and actually are trying to talk me out of the other models which I thought was odd but 🤷‍♀️.

The other reputable company in town uses Carrier, and I'm currently waiting on a call back to talk to them about a quote as well.

My house is ~1800 sqft. Any advice is appreciated.