Installing a tankless water heater

Daox · 06-01-11, 11:49 AM

Whilst looking at the power vent option and installing it and the price of ~$300, I also started looking at new tankless water heaters which are around $800 for a comparable unit. These new models sport some very nice features like electronic ignition (no pilot light), direct venting (a dedicated air intake so the burner doesn't use house air), and for ~$1200 you can get higher efficiencies in the 94% range and thats boiler range efficiency...

I also have to take into account that this summer I'm planning on putting up the solar hot water panels I got last fall... I was hoping to only install a boiler and have that as my backup to the solar for DHW and home heating. However, I'm still not sure how it'll all tie together. Apparently boilers can't directly heat DHW, I'm not sure why, but on demand hot water heaters can. Doesn't make sense to me.

06-01-11, 11:49 AM	#11
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	Whilst looking at the power vent option and installing it and the price of ~$300, I also started looking at new tankless water heaters which are around $800 for a comparable unit. These new models sport some very nice features like electronic ignition (no pilot light), direct venting (a dedicated air intake so the burner doesn't use house air), and for ~$1200 you can get higher efficiencies in the 94% range and thats boiler range efficiency... I also have to take into account that this summer I'm planning on putting up the solar hot water panels I got last fall... I was hoping to only install a boiler and have that as my backup to the solar for DHW and home heating. However, I'm still not sure how it'll all tie together. Apparently boilers can't directly heat DHW, I'm not sure why, but on demand hot water heaters can. Doesn't make sense to me. __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. Last edited by Daox; 06-01-11 at 11:59 AM..