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Thinking about a ductless heatpump.

shampoop

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Jul 12, 2009
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SW Washington
Here's the situation.
-1150 square foot single story condo

-Only shared wall is a single wall on the double car garage.

-Built in the early 70's so i'm sure the insulation isn't that great.

-2 bedrooms

-It has ceiling heat which doesn't work for the most part.

It's a starter house that I plan on renting out 3-8 years down the road. I was originally planning on just installing 3 nice cadet heaters, these nice ones hold a much tighter temp range, and have a variable fan speed and wattage so they are basically on low,slow, and quiet all of the time rather than the obtrusive not so quiet wide temp swing cheap ones. Because of the ceiling heat I already have power in the perfect locations at the thermostats that I could just place the cadets directly under.

http://www.amazon.com/dp/B0093GQLTG/?tag=atomicindus08-20

And then I would just not have any air conditioning. But now that summers here that plan sounds much less appealing. I live in the NW, and we only get consistent 80's and 90's during 3 months of the summer.

Now I'm thinking more about not installing the cadets at all and just getting a ductless heat pump. It would be located centrally in the house and the compressor would be right on the other side of the wall from where the head would be on the concrete patio.

Now assuming install and electrical are basically free and taken care of, around how much would a good quality single head system cost? And do you guys think it would be worth it? I would save $600 by not buying the cadets and could always add one or two later if i decided them to be necessary due to uneven heat. It would definitely increase the value of the place and what I could ask for rent.

My parents have a 2400 square foot 2 story house of similar age with a 10k btu and 8kbtu window shaker at either end of the upstairs that keep the house plenty cool in my opinion, the downstairs isn't quite as cool, but still a vast improvement over not having a/c. That's kind of the effect I'm looking for. Doesn't have to be able to keep the whole house at 60*F on a 100* day. What kind of size unit might be able to accomplish that?

Or should I ditch the heat pump Idea and just go with cadet heaters and a air conditioning only unit?
 
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zmaxmotorsports

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Is this one big room youre trying to heat/cool? The single head system youre talking about is throwing me off I guess.
I would think that youd want a separate head for each room unless Im not seeing the big picture here.
What are you planning to use for emergency heat if it gets too cold for the heat pump to work?:headscrat
 

JakeKohl

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Feb 23, 2012
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Greenville, SC
Is this one big room youre trying to heat/cool? The single head system youre talking about is throwing me off I guess.
I would think that youd want a separate head for each room unless Im not seeing the big picture here.
What are you planning to use for emergency heat if it gets too cold for the heat pump to work?:headscrat

The modern mini-splits (the name brand versions, anyway) are good down to about 5 degrees F outside temperature. Mine, without any auxiliary heat system, worked like champs when we had an extended period below 10 degrees for a couple of days this past winter heating my office and my garage. I wouldn't worry so much about that (as long as you keep the snow off the outdoor units! ;-)

To the OP, this comes down to a payback and rent-ability calculation. A heat pump is going to be significantly more efficient than any pure electric heater. I would take the energy costs of the two units and compare them to see how long the heat pump would pay for itself. You also need to factor in any future renters - how hard/easy will the unit be to rent with any particular heat and cooling setup?

One unit will cool a pretty large space but it won't handle up/downstairs elevations very well. Nor will it cool a separate room very well (even with the door open or closed). You will get some effect from one unit in the entire structure, but I'm not sure it would be enough to consider it "comfortable". Ideally, you get a multiple head unit and have an indoor unit in each of the major rooms.
 

zmaxmotorsports

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I guess Im used to our Nebraska winters where it gets well below 5 degrees for weeks on end some times.:lol:
Im still trying to figure out the single head he wants to run in middle of house to heat/cool the rooms.;)
 
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yeldogt

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Jan 2, 2012
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When you say "ceiling heat" what type?

If you plan on renting it out .. do yourself a favor now and fix it correctly .. make it comfortable and reliable ..... otherwise you will be fixing when the renters get in.

You will not keep good renters with a poor HVAC system ...
 
OP
S

shampoop

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Jul 12, 2009
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Location
SW Washington
When you say "ceiling heat" what type?

If you plan on renting it out .. do yourself a favor now and fix it correctly .. make it comfortable and reliable ..... otherwise you will be fixing when the renters get in.

You will not keep good renters with a poor HVAC system ...

It's the coils that are sandwiched in the drywall. It only works in half of the house and is generally undesirable. I'm going to be fixing the heat for sure. I'm not sure if installing 3 heads would work in this house, nor whether or not it would be worth it. Maybe just buying the cadets, and having one air conditioning only mini split in the middle to make the heat more tolerable is the way to go. It's not an expensive or super nice place, i'm not looking for perfection, but i'm pretty sure having one head, even though not ideal, would be a whole lot better than having no air conditioning at all.

The biggest thing I'm wondering now is what size air conditioner should i be looking at? Judging by the square footage estimators online they seem to be a little ********, the BTU's they recommend for my 1150sq foot house is a little more than the power of my parents window shakers in their 2 story 2400 square foot house and they keep their place nice and cool.
 

WyrTwister

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Joined
Jul 13, 2014
Messages
2
Do a google search for a heating / cooling load calculator .

The pay back will partially depend on your electric rate per kilowatt hour .

Mine is a bottom of the line 13 SEER unit . I read the high SEER units heat fown to a lower outside air temp .

God bless
Wyr
 
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