Suggestions For HVAC An Historic Apartment Building

 
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Old 02-19-2012, 11:35 AM   #1
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Suggestions For HVAC An Historic Apartment Building


Existing steam heat has been abandon. No existing AC. Looking for options for a new heating and cooling system. This is a 2-story building, 20 apartments, flat roof, masonry construction. Extreme climate... 30 below winter---100 above summer. The units are individually metered for electricity...would like to have tenants pay their own utility's. Thanks for any suggestions.

Last edited by 232323; 02-19-2012 at 11:57 AM. Reason: More details
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Old 02-19-2012, 12:17 PM   #2
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Re: Suggestions For HVAC An Historic Apartment Building


First company air handlers with hydro coils, A/c condensers on roof, and gas fired combination water heaters for domestic and heating water use.

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Old 02-19-2012, 01:53 PM   #3
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Re: Suggestions For HVAC An Historic Apartment Building


Might as well use h/p as opposed to straight a/c..
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Old 02-19-2012, 02:24 PM   #4
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Re: Suggestions For HVAC An Historic Apartment Building


Are you planning to run gas lines to each unit? With extreme temps, it would be advisable, as I had a project in which the contractor bought an electric water heater for the hydro coils (75 gallon tank), it didn't work out too well.

No gas lines? Expect excessive utility bills during the heart of winter.
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Old 02-19-2012, 03:42 PM   #5
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Re: Suggestions For HVAC An Historic Apartment Building


Are systems like Mitsubishi duct-less electric heating & cooling system worth considering?
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Old 02-19-2012, 05:01 PM   #6
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Re: Suggestions For HVAC An Historic Apartment Building


Not at -30.
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Old 02-20-2012, 05:39 PM   #7
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Re: Suggestions For HVAC An Historic Apartment Building


Naturally you have to start with the cost and availability of fuel.
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Old 02-20-2012, 10:32 PM   #8
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Re: Suggestions For HVAC An Historic Apartment Building


furr down electric heat spilt systems. most apts have them at least down here but not sure how you'd configure then individually to the existing duct work you have unless each apt has it's own duct work.
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Old 02-25-2012, 05:36 PM   #9
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Re: Suggestions For HVAC An Historic Apartment Building


Some sort of gas heat furnaces for emergency heat and heat pumps would be my guess also without seeing your building.
Going with straight electric furnaces would take a serious electric service to each apartment,and would basically be like living inside a toaster in my experiance around these parts anyway.
How bad is the boiler?
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Old 03-02-2012, 12:11 PM   #10
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Re: Suggestions For HVAC An Historic Apartment Building


At 30 below the mini-splits are out. You could use a Rinnai water heater with their air handler for heat and hot water. You would have to add your own ac coil and condenser for ac. For straight heat I would suggest the Rinnai Energysaver. Gas fired direst vent, modulatng gas valve and blower, cool to the touch, simple installation. My old company just finshed 800 units in MA replacing individual boilers and savings were around 50%.
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Old 03-03-2012, 08:47 AM   #11
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Re: Suggestions For HVAC An Historic Apartment Building


Truth of the matter is I wouldn't advise the hydro units. The reason being is that should something go amiss with the coils and/or one needs a replacement, it's not a good situation, especially, if it's in the middle of a wicked cold spell.

If the building had steam radiant systems for 50+ years, I don't see why it was gutted in the first place. Just an idea... individual mini splits in the living room, and one central hydronic system for the whole complex.

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