Recent Topics
Best recommendation for Honda 10w30 trans
by Pepsibottle1
06/25/18 01:55 PM
Mills Fleet Farm Roadrunner batteries - who makes?
by volk06
06/25/18 01:09 PM
Honda ATF DW1 bottle stamp decoding
by parshisa
06/25/18 12:03 PM
How to lower throttle sensitivity?
06/25/18 11:41 AM
That's some service! (New Central AC...)
by xBa380
06/25/18 11:13 AM
Valvoline 2 Cycle TC-W3 Marine Oil - 6qt - $20
by Jimzz
06/25/18 10:45 AM
Plumbing/Bldg Experts: Cause of Wet Slab?
by LoneRanger
06/25/18 10:13 AM
How to CONFIRM the Country of Manufacture
by Ed_Flecko
06/25/18 09:58 AM
Replacing trans oil seal
by redhat
06/25/18 09:50 AM
VW diesels sitting in huge lots waiting......
by ZZman
06/25/18 09:09 AM
DTD/DT Independence Day Promos
by Sayjac
06/25/18 08:39 AM
It's AMSOILŪ, not Amsoil
by Rat407
06/25/18 06:39 AM
VW Passat 2007
by madRiver
06/25/18 06:18 AM
Review: CVJ Remanufactured CV Axles
by The Critic
06/25/18 03:40 AM
Towing without 85w140?
by OilFilters
06/25/18 03:07 AM
2015 VW GTI autobahn oil questions
by Skyalbo
06/24/18 11:28 PM
Corrosion in the garage - salt or humidity?
by Kurtatron
06/24/18 11:13 PM
Darn dogs
by AZjeff
06/24/18 10:21 PM
New GC?
by Bullwinkle007
06/24/18 10:04 PM
The guy with the plexiglass head on you tube
by andyd
06/24/18 09:21 PM
Newest Members
dhy808, ROD_Z, lozpxs, danthemanx07, FunktasticLucky
65319 Registered Users
Who's Online
87 registered (AndyB, 4WD, badtlc, 87sammy, aquariuscsm, 9050lx, 11 invisible), 1685 Guests and 34 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
65319 Members
67 Forums
285971 Topics
4772301 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Topic Options
#4570318 - 11/10/17 08:55 PM PTAC air conditioner/heater
Joe1 Offline

Registered: 03/14/03
Posts: 580
Loc: USA
I live in a condo that has Hotel type heater/AC units. My 3 GE units are 30+ years old and one is shot, one works iffy and one is serviceable.

I'm thinking about replacing them before the colder weather arrives in NJ this winter. My research indicates that for heating, some use a heat pump while others use electric heat. The heat pump models are a bit more expensive and more energy efficient, but the electric heat models heat better and are quiter.

Can l expect gains in efficiency compared to my ancient GE models? Are heat pump models more or less reliable than electric heater models?

The major brands seem to be Amana, Friedrich,GE, Frigidaire, and LG. Should any be avoided?

I'm interested in hearing feedback from those that have some knowledge about these things.

#4570361 - 11/10/17 10:00 PM Re: PTAC air conditioner/heater [Re: Joe1]
Nick1994 Online   content

Registered: 02/19/13
Posts: 10136
Loc: Phoenix, AZ
From what I've read on, brand of equipment doesn't matter that much, the installation is the most important role. That includes correct sizing.
2015 Hyundai Sonata 2.4L 79k PU 5w30 & OEM
2000 Toyota Camry 2.2L 228k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 146k M1 HM 10w40 & Fram Ultra

#4570403 - 11/10/17 10:53 PM Re: PTAC air conditioner/heater [Re: Joe1]
mk378 Offline

Registered: 09/27/15
Posts: 1421
Loc: USA
You can compute the efficiency of the old units from the nameplate cooling BTU divided by cooling watts. It's going to be remarkably low.

Since a heat pump runs the compressor to heat, it will be about as loud in the winter as it is in the summer. Heat pump will fall back to electric heat when outdoor temperature is too low for the heat pumping to keep up.

Converting to mini-splits is the way to go, if the building allows them.

Edited by mk378 (11/10/17 10:59 PM)

#4570425 - 11/10/17 11:56 PM Re: PTAC air conditioner/heater [Re: Joe1]
Reddy45 Offline

Registered: 08/15/08
Posts: 2973
Loc: USA
Electric heat (like with strips) is 100% efficient.. all of the energy consumed turns into heat. However, the amount of electricity consumed to create enough BTUs to heat a home is often quite large.

Using 120V for an example, a 1500W portable electric heater creates around 5100 BTUs of heat.

However, a 120V heat pump that consumes 1500W can create 11,000 BTUs of heat (under ideal conditions) because it extracts any heat in the air outside via the refrigeration cycle and dumps it into the living space. The drawback with a heat pump, though, is that there is an ideal temperature point for it to run.. and if the outside air is any colder then you may not be able to extract enough heat to make the operation worthwhile.

If you replace your 30 year old units, yes there is very likely to be a gain in efficiency, largely because the government has mandated minimum efficiency standards for new systems.

#4570462 - 11/11/17 04:09 AM Re: PTAC air conditioner/heater [Re: Joe1]
WyrTwister Offline

Registered: 01/13/13
Posts: 1535
Loc: Texas
If it were me , I would replace the worst of the units with a heat pump & see how you like it . Then go from there .

If your existing equipment is that old , I would expect to see some reduction in electric cost .
God bless

#4574257 - 11/14/17 08:32 PM Re: PTAC air conditioner/heater [Re: Joe1]
Joe1 Offline

Registered: 03/14/03
Posts: 580
Loc: USA
My old models have an EER rating of about 8. Newer models go up to 13+ EER. If my electric bill is 100 a month with old units, what would cost be with new units with a 13 EER?

Thanks for the info.

#4574363 - 11/14/17 10:28 PM Re: PTAC air conditioner/heater [Re: Joe1]
WyrTwister Offline

Registered: 01/13/13
Posts: 1535
Loc: Texas
I am accustomed to seeing efficiency ratings in SEER numbers .

Check out

But a wild guess would be something like $ 100 x 8 / 13 = $ 61.54 . That may not be very accurate . Hopefully some one more knowledgeable than I can answer .

However , it the old equipment is not operating well / correctly ( low on refrigerant , for instance ) , it will be running longer than necessary & using more energy than necessary .

So , I would think , in that case , the numbers could be better than that ?

Best of luck , :-)
God bless