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Install an Arzel Heat Pump Pro zoning system and you can use any conventional 1H 1C thermostat to control heat pumps with back-up heat.

I saw from your post you're using Trunk dampers (2 dampers 1 per zone) trunk dampers increase turbulence and can trap more heat in the heat exchanger aside from that there are a few things to take...

Not sure what it'll do to old galvanized pipes but I use it frequently on hard to clean drains to eat all the gunk in them. ...

They work great for washing things, terrible if you end up trying to drain a boiler or water tank

I had a factory rep tell me once they weren't concerned if there was a 10-15psig hunt in the refrigeration pressure, I've observed it more when humidity is crazy high in the structure or non...

Electrical short in the compressor, I had one this past winter on a heat pump

Pans with separate secondary drain lines are code for any attic space, in really humid climates the drain lines need insulated the humidity will condense on the exterior of the drain line and make a...

Digital refrigerant gauges always fail at the worst possible time, keeping a set of analogue they are reliable and the math is simple enough for subcool and superheat, analogue can be field...

This one was popular with the companies I've worked with in the past
https://www.coolfront.com/home/

NCI does hands on training with their classes it's worth the travel and snagging a hotel to actually put into practice what they are teaching you before trying to apply it in the field.

The Inverter units use DC communication with the thermostat to control the modulation of the compressor and blower, 24vac thermostats aren't compatable

A couple manufactures are making 5 stage...

NCI is the National Comfort Institute, their airflow course can be found at
https://www.nationalcomfortinstitute.com/pro/index.cfm?pid=1779

It's worth the investment to learn what the other guy...

The lyric thermostats are complicated simple, they tried to compete with the Nest thermostats and took a lot of functionality away from the thermostat itself and put it in the App. There should be...

Concord is manufactured by Allied Air (Lenox, Armstrong, Ducane) and is the same size 4AC13*36P W24.25 D24.25 H29 DB74

You'll be stuck with 13 seer equipment

Most distributors don't require a...

I've had terrible luck with UEI and how quickly they eat up batteries. I had a fieldpiece last me over 10 years before I decided to update it, I currently have the SC440. The manometers have always...

The remotes from one manufacture to another are addressed differently, however residentially the remotes from the same manufacture will operate any unit in the house it has line of sight with....

Woohoo is normal to some extend, the wide range of RPM with inverter motors will cause noise under the right conditions, the blades are engineered to operate under the widest range of RPM but...

I'm upfront with the customer and let them know the labor allowance in the warranty doesn't cover all my labor but they would have much less out of pocket should something happen.

The same thing...

I wouldn't say it's a problem after it's in the refrigeration circuit it's going to mix with the oil and won't crystalize until exposed to air.

Whenever I've used it a mark the system so I know...

Possible that the condenser and evaporation coil don't match, 100psi suction in cooling if you worked fine enough in cooling it's probably not airflow related but static pressures and the...

What kind of noise? how cold is it outside are they using heat and the noise is loud during heating operation?

Heating - ice can form around the already tight cone and the fan blades rub creating...

You can control 3 Taco zone heads with a 40va but if you open all three at the same time and test the transformer you'll see a voltage drop indicating it's overloading. The holding current is lower...

Goodman has a lifetime equipment replacement warranty on their premium equipment if the heat exchanger or compressor fail to the original owner.

Time will tell if the warranty falls flat like...

Distributors often offer classes, there is an organization NCI that has a really informative class on combustion testing and adjustments.

I found my analyzer to be the best tool I kept in my van...

I found it had a short shelf life in hot trucks, the solution would crystalize in the tube and became worthless. If using it make sure to store it in a temperature controlled area (not the back of a...

It's possible there is a faulty ECM module on the blower that is causing a louder than normal frequency, you might see about getting a replacement drive to see if it clears up the issue. The only...

Tech Tip for future maybe, In cooling the indoor TXV meters refrigerant, in Heating the Outdoor TXV meters refrigerant, in both functions the opposing TXV is completely open bypassing the metering...

95' Coleman usually was sold with pressurized linesets, evap, and condenser, the nuts would be tightened, pierce the seals and there is no way to close the system off other than recover the entire...

With the piston backwards the most likely outcome is reduced compressor life, you'll have liquid running back in the vapor line as some of it does bypass the piston flowing around the outside, in a...

Single stage contractor grade Ruud

I had one recently where everything checked out, venting was correct, all hoses, traps, collection pan, vent motor wheels was clean, good heat exchanger, even the pressure switch tested good with my...

I've had supply houses send me mis-matched brands from the same production line in the past, as long as they are both from the same manufacture someone generally is willing to work with you on...

If you are going to do modulating make sure the equipment has a stainless burner kit available for the LPG it'll save everyone some grief, most brands are comparable, it usually comes down the...

I've personally done the heat runs in the crawlspace to provide conditioning, add a dehumidifier to prevent any musty odors from developing, and used out of the way locations to have relief vents to...

I run into this a few times, the low voltage wires are snaked around and sometimes touching the cap tubes or refrigerant tubing inside the ODU unit, the heat from the heat pump causes the wire...

To the best of my knowledge there isn't a limit to connected thermostats on the TCC, the worst that would happen is having a second account to manage the additional thermostats. The most I have...

I suppose back on topic... If you aren't using quick books and want to e-mail quotes for signatures I use Adobe Fill and Sign, I keep a word doc with the letter head and fill out what I need then...

The pressure switch is rated at 0.65 and you are seeing a differential of 0.7 the usual suspects since you've cleaned the condensate trap is that the venting is improperly installed, your pressures...

There is one right on the end of the motor and if you get some on the shaft pushing twords the motor and pushing into the wheel housing it will often stop the noise. The zoom spout is small enough to...

There are 2 zoomlock tools on the market 15kn and a 19kn, for the 1 1/8 and the 1 3/8 use the 19kn on the larger pipes. On the larger piping you also need to crimp it a second time, turn the tool up...

"Sealed" bearing loose their lubricant over time from the heat, if there is grinding replace the motor if it's squeaking or squealing sometimes for a temporary solution zoom spout oil will get you in...

Had another technician get information for me so I could quote a commercial RTU, ordered everything off the information I was given, the installers went out and had the wrong roof curb, oops not...

I ran into a similar situation, I thought I had a good spark and everything was set up properly but it turned out I had a cold spark and replacing the ignition transformer solved the trouble I was...

I've had good luck with PTAC UV germicidal lights as well as Ionizers, Nu-Calgone and RFG both make products that would probably work.

http://www.nucalgon.com/products/iaq/iWave-F...

Trane XV20I Heat pump with TAM8 air handler, Aprilaire 800 Steam Humidifier, and Aprilaire 213 competition upgrade. I don't think I can ever go back to single stage equipment again now that I've...

I like the concept but I'm going to have a hard time giving up the control on my wall, I like having the brain right there where I can adjust the system airflow, set dehumidification levels, and...

The biggest problem you'll run into with any core puller is overtightening, if you overtighten the Schrader will get stuck on the compressed o-ring. effective use is to tighten it on like you're...

I wanted to edit but couldn't find a button for it.

The manufactures I listed did away with the 14.5" design, they have done this to match airflow needs on the increased effiency requirements....

Most of the manufactures have a 14.5" Air handler with the 2 ton capability, need to specify that you need an "A" cabinet or 14.5" cabinet. I've installed Lennox, Luxaire, Trane, and Carrier and...

I had a heat pump do something similar, it turned out to be non condensable in the system preventing the coil from loading properly it threw off the pressures and coil temperatures all over the...