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24 July 2017 @ 02:00 pm
How to pick the best air-conditioner?  
One of our existing air-conditioners is about to die soon.
So we need a replacement. But which one?

Currently we need a smaller unit for the second floor.

Carrier system
One of AC installer companies recommend "Carrier" system:
Cooling Capacity : 22000
Heating Capacity : 21600
SEER : 14.5
EER : 12
HSPF : 8.2

Heat Pump Carrier 25HCE424A003
-10 year parts limited to original purchaser upon timely registration (otherwise 5 years).

Air Handler Carrier FV4CNF002L00
- Variable Speed

Auxiliary Heater Carrier CE0501N05

Thermostat Carrier TP-WEM01
- Wifi Capable.
- 5 year warranty if registered in a timely manner.
Price (including installation): $5,699

That choice seems a little bit pricey for a small AC unit. But what do you think?

Most homeowners report spending between $3,710 and $7,140 to have air conditioning installed. This price is more typical of a central A/C unit installation rather than a window central air conditioner addition which typically averages about $300.

Originally posted at: http://dennisgorelik.dreamwidth.org/136538.html
affidavid on July 24th, 2017 10:38 pm (UTC)
I ordered 18,000 BTU Ductless DC Inverter Mini Split Air Conditioner, Heat Pump, 230VAC. 21 SEER. MODEL: WYQ018GMFI22RL. AHRI CERTIFIED about a year ago from highseer.com for $1300. Had to install it myself (you need some minor equipment) but paid about $150 for electrician for profession connection 240 volts.
Dennis Gorelikdennisgorelik on July 25th, 2017 12:33 am (UTC)
1) How much of your time went into that installation?

2) https://www.amazon.com/Inverter-Conditioner-Dehumidification-Ventilation-Installation/dp/B00M7E57W8
How noisy is it?

3) This is not a central air-conditioner unit I am shopping for ...
How big is your house?
I would guess about ~1400 sq. feet?

4) It is interesting, how efficient these "Ductless DC Inverter Mini Split Air Conditioner" is. 21 SEER is a very high efficiency number. Even the most expensive central air conditioners usually do not claim such high efficiency. Typical SEER numbers range from 15 to 19 SEER.
affidavid on July 25th, 2017 12:52 am (UTC)
1. Installation took a weekend. I had to buy a set for AC installation (something like http://www.ebay.com/itm/4CFM-Rotary-Vacuum-Pump-1-3HP-AC-Manifold-Gauge-R410-R-22-R134-R407C-Refrigerant-/351561649677?hash=item51dab50e0d:g:HcQAAOSwPWRZWPld)

2. My device is very similar to the link. It is very quiet, less noisy than forced air heating that I have in my house.

3. If you have all the setup them go for the central one. My house is ~2000 sq feet but my summers are very moderate and I use AC only in hot days.

4. Ductless are known to be more economical than central ones - pushing air through central ducts warms quite a lot.

You can try DUI installation of the central one yourself. If you just replace the old unit it should not be very difficult. But you will have to buy a bottle of appropriate refrigerant (usually R410) from ebay, it is additional $200. But some dexterity is definitely needed.

Dennis Gorelikdennisgorelik on July 25th, 2017 01:05 am (UTC)
> Installation took a weekend.

Wouldn't it be cheaper to hire a professional installer?
Your time is probably much more expensive.

> Ductless are known to be more economical than central ones

Thank you for the unexpected perspective.

> You can try DUI installation of the central one yourself.

I would ... if I planned to regularly install Air Conditioners.
But realistically, this is 1 or 2 times deal for me.
So specialization principle hints that I would be better off if I just hire help for that.

BTW, dealing with the refrigerant requires getting a license for work like that.
Yaturkenzhensirhiv - a handheld spy: Веселый носорогyatur on July 25th, 2017 12:27 am (UTC)
3,170 - что-то мало. Я заплатил что-то в районе 12 штук. Но это, конечно, зависит от штата и от объема дома.
Dennis Gorelikdennisgorelik on July 25th, 2017 12:40 am (UTC)
> 3,170 - что-то мало

Авторы статьи с тобой согласны: "between $3,710 and $7,140".

> Я заплатил что-то в районе 12 штук

Это за 2 юнита или за один?

Какая у тебя площадь дома?
У меня ~3,025 sqft.

Кстати, несмотря на то, что ты на севере (относительно меня), но у тебя летняя температура может быть и повыше моей (от океана немного дальше).

Возможно у вас налоги штата на подобную HVAC аппаратуру и labor - неприлично задраны.