Boiler/Furnace Heating-A/C - NJFBOA - Home of New Jersey's Camaros and Firebirds

MDSheds_SS · 11-19-2015, 11:12 AM

Just putting it out there... I'm a local 9 service tech and it's about that time for Heating systems to start acting up. You guys have any issue I'll be happy to try and walk you through your problems. I'm sure there's a bunch of guys on here that also do HVAC so I'm not trying to step on toes just trying to help someone in a jam. Pm me if you have any questions. I do install work as well.

WildBillyT · 11-19-2015, 03:38 PM

Man, one day too late!

I had a zone controller go bad over the weekend and had to call a guy.

On a side note, I'm looking to buy a shed in the spring time. I was going to talk to you at the rental but didn't get a chance. You guys can build on site, right? If so I'll reach out to you in the spring. I'm in Springfield which isn't too far from Woodbridge.

BonzoHansen · 11-19-2015, 03:57 PM

you work on taco branded stuff? I have a zone controller issue that i think is actually a sticky ball valve the controller motor cannot overcome.

MDSheds_SS · 11-19-2015, 04:19 PM

We do build on site and pre-fab. I handle the pre-fab deliverys and my father handles the rest. Let me know when you want it and we can work something out.

And yes I work on Taco pumps and control relays.

LTb1ow · 11-19-2015, 06:28 PM

What temperature threshold do you set heat pumps on in NJ?

MDSheds_SS · 11-19-2015, 06:51 PM

Depends on the unit, most residential split systems can run down to 35* ambient temp. Before the electric heat /propane heat kicks in.
Diakin mini splits can run as low as 0* Discharging 95+ degrees.
Not sure if this answers your question.

LTb1ow · 11-20-2015, 01:59 PM

Quote:

Originally Posted by MDSheds_SS

Depends on the unit, most residential split systems can run down to 35* ambient temp. Before the electric heat /propane heat kicks in.
Diakin mini splits can run as low as 0* Discharging 95+ degrees.
Not sure if this answers your question.

Just seems to be no straight answer as to where the efficiency of running a heat pump goes below the cost of running the gas furnace. I have my set point at around ~40*F at the moment, and just gonna evaluate how the bills go. AFAIK, gas is much cheaper than electric so its confusing as to why running the "AC" year round will save money.

The_Bishop · 11-22-2015, 05:02 PM

Well, because you're using it as a heat pump to take heat from outside air and move it into your house. It's not like turning electricity directly into heat, that costs a lot more. 1 kilowatt will get you about 3400 BTU, as direct resistance heating. In a heat pump setup, that same kilowatt will net you a lot more BTUs, as it's 'moving' the heat in the outside air into your house.

MDSheds_SS · 11-22-2015, 05:19 PM

Everyone's house is different. And ever household has is own type of HVAC. I'm not an expert on what's the most efficient or what's the most cost effective. I know I can fix what have, help you fix what you have/ replace it with a unit that works. Not trying to be an ass but . If I was an expert on efficiency and savings I wouldn't own a Racecar.

JL8Jeff · 11-23-2015, 09:26 AM

We are used to keeping the temp cooler in our house so in the winter we have it around 62-66. We had high efficiency (90-95%) gas furnace and AC put in several years ago when they gave the tax credit. What is interesting is that the gas/electric bill for the heat in winter is around 33/66% gas/electric. It costs more to run the blower fan for the furnace than the gas to produce the heat. Our highest gas/electric bill in 2015 so far was $187 back in Feb but most of the time it's around $70-100 a month from May to Oct. I wonder if the heat pump is a similar scenario with the cost to run the pump vs the cost of the heat source.