Help with sizing Heating & A/C System

hr

to see well built and insulated homes in the 15-17 BTU/ square foot range these days. That would put you in under 50,000.

The ONLY correct answer to your question is to do, or have done, a heat load/ gain calculation.

Anything else is just a wild guess. More often than not to the oversized, uncomfortable, inefficient side :)

hot rod

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Supply House Rick

Help with sizing

I was told to check out this site for advice. I am having a 2800 square foot modular being delivered around June 1st. What size oil boiler do I need? I will use a storage tank for DHW, no whirlpool, what size?

How many zones do you suggest? It's all baseboard already instead. What size condenser do you think I need? Duct work is already installed. Thank you very much, Paul

Nick L. in Vt

sizing

you really should have a local proffesional look over the plans and see the specs on doors and windows. they will be familiar with the available fuel choices,and competence on servicing in your area. sometimes the wiz bang high efficiancy unit is junk if the common service tech can't pull the cover off when it's 15 below and 1 am.

Supply House Rick

It's very well insulated

just looking for ballpark figures based on square footage. House is in central Ohio Thanks Paul

Eric_25

Heat Loss

Most modular companies I know of will provide you with a heat loss calculation for the home you are buying. Don't be tempted to drastically oversize the system as so many people do. I usually add a 10 or 20% fudge factor to the software calculation to aid in setback recovery or unforeseen circumstances such as a door or window being left open, missed insulation etc. The indirect is sized based on the # of baths and sizes of tubs.

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Eric_25

Ballpark

I heat my own 2800 sq.ft. home in NH with an 85,000 BTU Buderus oil fired and a 40 gallon indirect with capacity to spare.

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Nick L. in Vt

i'm a east coaster

here it's oil fired hydronic systems that are best. we do energy kinetics, peerless, buderus and some weil mclains. if you are limited to no chimney, i'd go gas buderus.

jim lockard

thats what I

> Most modular companies I know of will provide you

> with a heat loss calculation for the home you are

> buying. Don't be tempted to drastically oversize

> the system as so many people do. I usually add a

> 10 or 20% fudge factor to the software

> calculation to aid in setback recovery or

> unforeseen circumstances such as a door or window

> being left open, missed insulation etc. The

> indirect is sized based on the # of baths and

> sizes of tubs.

>

> _A

> HREF="http://www.heatinghelp.com/getListed.cfm?id=

> 397&Step=30"_To Learn More About This

> Professional, Click Here to Visit Their Ad in

> "Find A Professional"_/A_

jim lockard

I was thinking

That the home builder has it all planed out. If the duct work is in place someone somewhere has a plan, or lets hope they do. J.Lockard

Boilerpro_5

Yep, HR got it right

Even my 1906 2800 sq ft two story frame is down below 50,000 btu/hr at -4F outdoor design. Central Ohio is probably a little warmer.

Gotta run a load calc to know.

Boilerpro

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