Home Improvement Stack Exchange
Home Improvement Stack Exchange

Questions tagged [ductless]

22 questions
5
votes
2 answers

ductless AC split systems?

Does anyone have the ductless split AC systems offered by Mitsubishi, etc.? Is installing them a DIY job? Can you share your comments about them, in general? Edit: Inspired by DA01 comment, I'd like to add: From what I see in NE US, they don't…
Peter Q
  • 2,223
  • 11
  • 36
  • 40
4
votes
3 answers

Are there any ductless mini split systems that offer standard HVAC wiring controls?

Have been looking for in the US a ductless mini split heat pump system something like the Mitsubishi Electric Mr. Slim that uses a non proprietary wiring scheme for its wall mounted thermostats. Ideally it would be the standard 24VAC wiring scheme…
MrDaniel
  • 401
  • 4
  • 7
  • 13
3
votes
1 answer

Is it a good idea to go all ductless?

I have a 2000 sq ft house in TN(mostly air-conditioning is used, winter is mild) and the house has 2 trane gas furnace for heating(both 25+ yrs old) that need to be replaced, one 25+ yr old air conditioner that needs replacement and one fairly new…
ns12345
  • 133
  • 4
2
votes
2 answers

Gain access behind Daikin ductless air conditioner indoor unit

When the ductless indoor unit was installed a hole was cut in the drywall behind the unit and smoke from my neighbour's apartment is coming in through the opening into my home. Is it possible for me to pull the unit away from the wall slightly in…
MarcGuay
  • 207
  • 1
  • 3
  • 9
2
votes
2 answers

Ductless mini-split AC with multiple indoor units for a home with small bedrooms?

Location: US, NYC. I want to improve the air conditioning setup for an apartment in a 2-family house. Current situation: 200 sq ft master bedroom, horrible old through-the-wall AC on a dedicated 20A 120V circuit two 80 sq ft bedrooms, currently…
nyc_relative_newbie
  • 51
  • 4
2
votes
1 answer

How Should I Reuse or Replace this Ductless Lineset Cover?

Should I insist on a new line set for this ductless mini split replacement? How should I do the lineset cover given that the current setup can't be easily opened? The ductless mini AC at our Cabin needs replacing (missing half its old R22 coolant,…
WPNoviceCoder
  • 549
  • 3
  • 13
1
vote
1 answer

Is a single ductless HVAC system more efficient than two smaller ductless systems?

I have an 809 sq ft stand-alone room with concrete slab and block walls that needs to have AC and heat. We have windows on all sides, 8' ceilings, and live in Florida. The room will be used as a dog kennel and office. We're looking at ductless AC…
Jay
  • 11
  • 1
1
vote
2 answers

Is a PTHP an HVAC option for a super or well insulated structure?

Is a Packaged Terminal Heat Pump a good HVAC system for a structure that is super insulated or passively insulated assuming the unit is sized and fitted to meet the needs of the structure. There is not really much mentioned about PTHP and very…
MrDaniel
  • 401
  • 4
  • 7
  • 13
1
vote
0 answers

Extra valves on AC lineset?

I'm installing a mini-split system in my shop, but realize I’ll probably need to move the outdoor unit in 6-12 months. Does it make sense to try to add a pair of valves to each line to allow them to be detached without losing refrigerant? Is that…
Rick
  • 515
  • 2
  • 10
  • 19
1
vote
1 answer

Installing ductless units in my apartment. What am I supposed to do with all these coolant and drain lines?

I'm installing 3 ductless AC units in my apartment. I know the lines are supposed to go outside and connect to the condenser but there are three coolant lines wrapped in insulation and three drain lines. I don't want to have a ton of lines on the…
bcstryker
  • 113
  • 3
1
vote
1 answer

Best tool for cutting a 2" horizonal sloped canal cut through a 11' plaster/lath internal wall

In one room I need to cut groove into a wall to accommodate a condensate drain from a minisplit air handler/evaporator in an adjacent room. I know I could use a pump but I rather rely on old fashion gravity to transport the condensate to a drain,…
ecco88
  • 502
  • 3
  • 14
1
vote
1 answer

Ductless AC Initial Charge

I just purchased an LG mini-split set: 18,000 BTU indoor unit https://www.supplyhouse.com/LG-LSN180HSV5-18000-BTU-Ductless-Standard-Multi-F-Air-Conditioner-Inverter-Heat-Pump-w-Built-In-WiFi-Indoor-Unit 7,000 BTU indoor…
newothegreat
  • 133
  • 4
1
vote
0 answers

Daikin Mini Split Runs Constantly

We had a Daikin ductless system installed as a replacment for our old system that finally died. We have 4 total units inside the house, with 1 in each of the 3 upstairs bedrooms and a larger 18K BTU unit on the main floor. Its a small townhouse. …
Windward
  • 11
  • 1
  • 3
1
vote
1 answer

Mini-split HVAC in new build?

Next few weeks I will be in the process of getting quotes for mini-split HVAC system. Curious, if anyone has gone ductless and if so, how is that working out? The house will be a a two story build(Buffalo area): main floor with an office and a…
Andy
  • 151
  • 3
1
vote
2 answers

Can ductless air conditioning+heat pumps work well on floors that have doors closed?

Our home is a split level, with 5 floors - basement, den, kitchen, bedroom, master. Each of those floors is mostly open EXCEPT the bedroom floor, which is 4 separate rooms. A HVAC contractor we got a quote from recommended a ductless system+heat…
Matthew
  • 295
  • 2
  • 4
  • 13
1
2