I'm in the construction phase of building my new 2 identical houses, and I want to hear about your expertise and experience on what kind of HVAC system I should install.
Some info about each house:
- 3 floors
- Total built up area is approximately 4300ft squared. First 2 floors are equal in size. Last floor around 450ft squared.
- The ambient temperature in the summer reaches 122F
What I know so far and my options.
1. Wall mounted split units - this would cost me around $$$ per house. What I don't like about that however is the presentation of the house inside. The finishing of the houses as a whole is above par, so i would like that to match with the inside. Also, having wall mounted units takes space (a total of 10) and having 10 condenser units sitting on my roof is not the most pleasing eye sight.
2. My other option is ducted split units. This would be great as they would be concealed from the inside, but it's pretty much the same on the roof, 10 CU's sitting there. This would cost me around $$$ per house.
3. A third option is a rooftop package unit. This is convenient, but its running cost is relatively higher. Also, I don't get the luxury of controlling the temperature of each room separately, even if I install VAV boxes, that will stop air flow, but not running cost. I do not have a quote for this as it least interests me.
4. My last option is a VRF system. This seems to nail it for me. I would have 1 or 2 units on the roof, I get to control each room separately and its running cost is cheaper. This would also cost me around $$$$ per house.
I'm not sure of the lifespan of the VRF and its ease of maintenance on the long run. And its cost tends to be around 3 times the wall mounted. Is it worth it? I'm waiting on a quote to have only the ground floor as a VRF system and the top 2 floors as wall mounted as that would get the price down.
Any recommendations? What other issues should I be aware of?
Sorry for the long post.
Pricing isn't allowed