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13 Answers

So, My AC system died last spring, and I was prepping to put new windows (impact resistant, low e) in my house... My house is approx 2200 sq.ft in Florida, south of Tampa... Zone 2A

I had a 4 ton system, and knew that would be too big as a replacement, but my HVAC tech replaced it with what was here and said he could tune it... Now my house averages 55%rh or higher... Up into mid 66-67...

Asked By Chris Marriner | Aug 18 14
4 Answers

We have a project in a 5a climate zone and another option for cooling that we are considering is an ice storage system (like Ice-Energy/ Ice Bear used to have) for residential cooling. It doesn't seem like this is available at the residential scale. We understand it is a more expensive system but we are interested in the CO2 reduction concept that this could allow. Any thoughts on this would be appreciated.

Asked By Nathan Kipnis | Aug 14 14
Answers

We are designing a house in a 5A climate zone and am wondering if anyone has any experience using a desiccant wheel system for residential cooling?

Asked By Nathan Kipnis | Aug 14 14
42 Answers

Hi all,
Can editors step out from behind the curtain to ask opinions, too? I'm planning to redo my garage shop this Fall and although my primary heat for the space is a woodstove, I'd love to have some supplemental heating, and cooling in the summer would be great, too. I'm no schlep when it comes to remodeling work, but have never installed or seen a mini split install. Would I be a fool to try the install myself or have the kits gotten streamlined to the point that its basically plug and play, complete with factory-charged units and quick connect line sets, etc?

Asked By Justin Fink | Aug 22 13
1 Answer

I am about to install solar panels at my home. I want to do mini-splits in my house, but because if have a Cape with many small-ish rooms, I would need multiple indoor units. I live in Central VT, so the hyper heat units would be the way to go (it is cold here). However, apparently I can only do one indoor unit per outdoor heat pump on the current hyper technology. I've been told that Mitsubishi has the technology and will release it to the market any day.

Asked By DANIEL GOTTSEGEN | Aug 12 14
34 Answers

I'm looking for an air-to-water heat pump and feedback from those who've used them. We have a LEED for Homes project in Victoria, BC, perfect climate for heat pump, affordability of project prohibits groundsource for 36Kbtu heat loss of 1800 ft2 home and for optimal comfort, low temp/efficiency, to avoid ducting we're selected hydronic in-slab for heating distribution thus standard air-to-air heat pump is a no-go.

Asked By Allison Ashcroft | Jul 28 09
6 Answers

Hello all,

I am working with an HVAC contractor to design and install a multisplit system for our 1950s ranch renovation. As an FYI, we've done a substantial amount of upgrades to improve the tightness and insulation of the home although at 60 years old the house still isn't perfect. I'm now hoping to replace our aging ducted air handler with a new ductless system. Motivation to go ductless is driven by many factors that I won't get into in this post (both efficiency and a more practical issue of headroom in our finished basement).

Asked By Brian Gray | Jul 31 14
4 Answers

11' X 30' room. Fujitsu 9rls2h. The specifications shows the flow pattern is long and skinny. Would it be best to install at the middle of the long wall or install at the end on a short wall? There will be ceiling fans at the midpoint and at the point farthest from the minisplit if on a short wall.

Asked By Shawn Shumaker | Jul 28 14
1 Answer

My wife and I recently bought an old (1880's) two-story duplex with separate apartments on each floor, each about 750 square feet and very poorly insulated. We have long-term renovation plans, but our primary near-term complaint is the inability of the apartments (especially upstairs) to cool down at night -- even with our quite cool summer nights here in Northern Colorado and all the windows open. We don't want air conditioning, but we would like to improve night-time ventilation.

Asked By Kevin Ummel | Jul 24 14
13 Answers

I have a 2300 square foot colonial, built 1960 in Zone 5A, and I'm looking to replace the boiler with a direct-vent mod/con boiler, with indirect hot water. Goals would be increased efficiency (which isn't just about saving money), reliability, low maintenance, and retiring the current chimney flue.

Asked By Daniel Griscom | Jul 19 14
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