Make sure to save enough hot air for the candles!

Like, who has plumbing work done, and doesn't pressure test with air pressure first?

Hot air rises, so I am not sure insulating without installing AC will make the summer situation more comfortable.

I am deep into American history, architecture, gardening and wilderness hiking, the latter of which I do from my wooded, 10-acre base camp, adjoining the Okanogan National Forest in north-central Washington State.

Aloha Cole,I'm a Air Force O-3 Reservist and vacation rental owner/operator of 2 positive cash flowing units in the surf capitol of the world Haleiwa, HI.

I looked on a few different HVAC web sites and I don't see parts listed except for  thermostats and complete electric baseboards.If hydronic, then yes, but you'd have to know how to drain the boiler, solder heating element to pipes, and refill/bleed all the air out.  

Your vinyl tiles will let air leakage happen between each joint. 

The run also must not be too long; our code says no more than 25 feet.Here's some specifics from the International Association of Certified Home Inspectors:The recommendations outlined below reflect International Residential Code (IRC) SECTION M1502 CLOTHES DRYER EXHAUST guidelines:M1502.5 Duct construction.Exhaust ducts shall be constructed of minimum 0.016-inch-thick (0.4 mm) rigid metal ducts, having smooth interior surfaces, with joints running in the direction of air flow.

Central Air?

You can find 300-400K 2-4 units that are very safe (West Hartford, Simsbury, Avon, Glastonbury, Newington in central CT) as well as other areas in closer to NYC in the Stamford area.