7

I use concentrated liquid and will consider it the same as canned cleaner. Condenser cleaner or coil cleaner is formulated to take grease and oil out on top of the dirt. I use Nu-Calgon , Nu-Brite this is a non acid cleaner that mixed with water cuts the grease and oil and actually removes dirt better because of its foaming action. In my early days I ...


5

Move the orange wire on the troubled thermostat from O to B What you are seeing here are fairly classic signs of getting your system's reversing valve control backwards. In order to do their fancy tricks of being able to heat your house as well as cool it, heat pump systems need to be able to make the indoor and outdoor coils "swap places", and ...


3

There's no free lunch. Really. Saying a heat pump is an over-unity engine ignores why it works: It takes something from something else; i.e. it creates an externality. Ignoring those is a common error of over-unity believers. Heat energy is the level of excitation of atoms. It generally stores on a per-atom basis not a per-gram basis. What's relevant there ...


2

When a heat pump is installed it should be set up to turn on the electric heat strips when it drops below the point where the heat pump is more efficient. This is calculated on the units performance which should be specified based on the predicted (Charted) lowest anticipated temperature for your area. If it is using the compressor it will defrost either ...


2

Hey I am a professional hvac contractor that specific zone board will not do 3 stages of heat so it will not work with a 2 stage heat pump and heat strips you need to replace that board with Honeywell hz432 zone board tha th should fix your issues


2

Yes, CO2 can build up. I have a ductless mini-split system and recently replaced the door seals in my home. Working at home during this pandemic, there are three adults here in our 1700 square foot home almost 24/7. We have experienced a bit of drowsiness lately so I bought a CO2 monitor to check our air quality. CO2 level in our home was 1600 PPM! Opening a ...


2

Definitely maybe... Sorry but it depends on whether or not the existing ducting will work with the new unit. So you should take that into consideration when selecting a new air handler. Many units are similar but not identical and so you may have to have an "adapter" fabricated to mate up the new unit with the old ducting. Why do you think the old unit ...


2

The manual for the Pioneer mini split system I'm installing this weekend says the unit is pre-charged for 16 foot lines. For distances less than 25 feet the manual says no change to the refrigerant charge is needed. Nowhere that I can find does it say the pipes have a minimum length. Maybe see if the installation manuals are available on the Internet for ...


2

Is your water heater inside the home or outside? I ask this because heat pumps use heat transfer using the heat of the area they are in to create heat. Ok to put it more simply if the water heater is inside the home when the water heater is extracting heat to store in the tank it is cooling that area just like an air conditioner would. So are heat pumps more ...


2

It's complete BS. If that was actually a problem, then the system wouldn't let you do that.


2

Yes you can run them in the wall. Most mini splits installed today have the drains and the high and low pressure refrigerant lines run on the exterior of the home so this is very normal and has been industry standard for decades to run the condensate out an exterior wall or into a drain. I would want to make sure the run was straight and you have the ability ...


1

If you gas to heat the hot water is only $20 a month, It would not make economical sense to change to a heat pump. The cost of a gas water heater would be roughly 1/3 or less the cost of a hybrid heat pump. The gas has low maintenance, just yearly flushing and maybe anode replacement. Gas has a fast recovery time. The hybrid heat pump would require 220 v ...


1

The #1 factor in water heater life isn’t raw age (and 15 isn’t exactly geriatric), it’s maintenance of anode rods. Heat pump water heaters aren’t free. They just change the piper you are paying. As Ed Beal says, heat pump water heaters are basically air conditioners that have the “hot side” in a big tank of water. That’s awesome when you want to run air ...


1

When you have a heat pump the thermostat that controls it is a 2 stage thermostat. The first stage controls the heat pump and the second stage controls the heat strips. The heat pump operates off the first stage and if it can not produce enough heat and the indoor temperature falls below the thermostats set point by a certain amount the second stage ...


1

Looking at the pump here and at a Lowes store, I would have to say yes to your question. I see nothing on that pump that forces you to install it on the tanks discharge or under a sink, per instructions. I have a re-circulation loop I installed in my home. I brought a dedicated 1/2" line from the 3 bathrooms in my home. I soldered in a "Tee" ...


1

I would call in an HVAC company that is versed in heat pump repair. Since we do not know what is wrong with the electric back up heat we can only guess. The problem may be as simple as a bad sequencing relay, broken or loose wire, or a bad heat strip. Instead of being cold, I would get it serviced.


1

If this is a standard ducted A/C unit you could check the temperature drop across the A/C coil using a thermometer. Check the air temperature entering the coil (return air) and the discharge air above the coil (cold supply air). The temperature drop should be between 15 & 20 degrees F. If the air temperature drop exceeds the 20 degrees F more air may be ...


1

What is “old” a 20 year old system may have the same specs or close. The serial # can help find the date but if it has an open combustion chamber your efficiency will improve. As far as pay back that really never happens I say this because by the time even a 10% increase in efficiency you save $10, $20 per month by the time it pays back its time to replace ...


1

And I'm embarrassed to say that I've figured it out.  I thought I had checked all the wiring, but I missed a small section of exposed copper on the Y wire in the air handler.  Once I taped it up, the problem went away. Thanks for the suggestions guys!


1

The outside unit is a compressor , the difference between a heat pump in heating and cooling is the Direction of the refrigerant flow. So for a single fuel heat pump to cool it may well be running in stage 1 but a reversing valve has altered the flow. If you have a dual fuel system then in heating a choice is made based on the temp which one to run. Your ...


1

Your blower motor's HIGH speed died Most furnaces and split-system air handlers run their blower at a high speed in FAN and COOL, and at a lower speed in HEAT. As a result, it's possible for the blower to work when the system is set for one mode, but not the other. I would consult the manual for your existing air handler/furnace for instructions on ...


1

So, reverse engineering this... From the schematic, we can at least tell that your air handler has no heat strips, just a fan and a direct-expansion (DX, aka evaporator or indoor) coil in it. As a result of this, and the fact that your heat pump appears to be a fairly simple unit with only a reversing valve and a compressor contactor, this is actually not ...


1

Some cleaners contain acid or compounds that will accelerate the breakdown/dissolution of fins, and can increase corrosion between copper and aluminum. HVAC forums are full of posts of fins eaten away. That said, a relatively new study showed 'dirty' fins create more turbulence and increased the cooling capacity (by no longer having a laminar flow region). ...


1

First, the labels you need to look at are the ones on the outside - not the ones under the wires. The labels under the wires are for a conventional system. Looking at the labels on the outside, it's clear that the two yellow wires are Y and Y1, and the white wire on the left is AUX, which is normally Auxiliary or emergency heat. Y and Y2 are normally used ...


1

What you're describing is a waste of perfectly good heat pump heat Forced-air, "dual fuel" heat pump systems require a "hard cutover" from using heat-pump heat to using auxiliary heat as you can't run a DX (heat pump) coil and a furnace heat exchanger (HX) in the same air handler at the same time without playing havoc with the heat pump side of the system (...


1

You can do this without any electrical parts at all. Use a solar thermal tank and Thermosyphon flow from the solar thermal panels to the tank. The panel arrangement in B will tend give a lower higher temperature compared to A but more hot water... With thermosyphon flow all the pipe runs have to be sloping, up for hot and down for cold. I had a 1280 ...


1

Photovoltaic plus tankless water heaters plus counterflow heat exchangers (there are youtube videos how to build inexpensive shower heat exchangers) would be also an option. Heat exchangers may cut the needed power by 25 to 45%. Rentability depends on the relation of the feed-in vs. feed-out tariff, and of course of the installation and procurement costs. ...


1

I see 5 questions: 1) Solar hot water in the morning and on cloudy days. Your usage pattern is worst-case since maximum solar energy availability is soon after your usage. So you will need a storage tank that can keep the water hot until you need it. Lots of variables here so your best bet is to consult an insulated tank supplier in your area. As far as ...


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