"You could also slow down the airflow on the larger unit. This should lower the temp of the air going into the room and slightly increase the runtime. Both of these improve humidity removal."
For 6 years we have had a Lennox system in a 1995 ranch house with a 2.5-car attached garage that my wife's late husband turned into a heck of a family room. Call it a total of 2300 sq.ft. with 9-foot ceiling old double pane windows and mediocre insulation. It was their first house and it was the '90s.
Anyway, our Lennox system has a 4-ton XP-20 Elite variable unit outside and a matched 5-ton variable Signature air handler inside. It's all matched, it's variable, and it has a communicating wifi 'stat.
It's complicated and was quite expensive. And you barely know it's there.
It seldom ramps up fully and during Richmond's long humid summers it putt-putts along so gently you don't notice it's on most of the day. It's just sort of idling. The curtains don't move and the floor vents are under many of them.
The air stays in contact with the cold coil and the air is beautifully dry. And it's not expensive to run, if you don't remember the shock of paying for the install.
Otoh, out little almost 800 sq.ft. beach cottage has a 1.5 ton single speed heat pump and when that comes on you look to see who opened the door or window. Whooosh. It cools and dehumidifies, but it's rather crude. Reminds me of a 1916 house I had with a 25,000 btu window unit in the living room. It would cool the entire downstairs and rearrange all of your paperwork if you left it out. That's just over 2 tons of cooling and was fairly cheap to run on 220v.
For 6 years we have had a Lennox system in a 1995 ranch house with a 2.5-car attached garage that my wife's late husband turned into a heck of a family room. Call it a total of 2300 sq.ft. with 9-foot ceiling old double pane windows and mediocre insulation. It was their first house and it was the '90s.
Anyway, our Lennox system has a 4-ton XP-20 Elite variable unit outside and a matched 5-ton variable Signature air handler inside. It's all matched, it's variable, and it has a communicating wifi 'stat.
It's complicated and was quite expensive. And you barely know it's there.
It seldom ramps up fully and during Richmond's long humid summers it putt-putts along so gently you don't notice it's on most of the day. It's just sort of idling. The curtains don't move and the floor vents are under many of them.
The air stays in contact with the cold coil and the air is beautifully dry. And it's not expensive to run, if you don't remember the shock of paying for the install.
Otoh, out little almost 800 sq.ft. beach cottage has a 1.5 ton single speed heat pump and when that comes on you look to see who opened the door or window. Whooosh. It cools and dehumidifies, but it's rather crude. Reminds me of a 1916 house I had with a 25,000 btu window unit in the living room. It would cool the entire downstairs and rearrange all of your paperwork if you left it out. That's just over 2 tons of cooling and was fairly cheap to run on 220v.
Statistics: Posted by andypanda — Wed Jan 29, 2025 9:39 pm — Replies 75 — Views 4785