Opinions on Install options

CC.Rob_4

A third vote for doing the heat loss calculation. The proposed boilers vary in size by nearly a factor of two.

With an older home, you can reduce the heat loss significantly by insulating and sealing. Consider TRVs instead of zones, and ask about outdoor reset packages, too.

Jason_33

Boiler Install Quotes

I have been collecting bids on a new boiler for 1854 3300 sq foot poorly insulated single zone hydronic radiator heated house in New Hampshire.

Quote #1 $8,948
Buderus G-115-34 with Riello burner with a 40 gallon super stor water heater model # SSU45.
This bid includes disconnecting second floor heat piping from first floor to make two zones. Install 2 honewell focus pro 5000 digital thermostats. Install a new air scoop package, combination feed valve, low water cut-off and system relay.

Quote #2 $10675
Buderus G-115-21 with Riello 40f3 burner with a Amtrol boilermate 41 gallon hot water heater.
This bid includes vortex micro bulle air elimination system, one full port boiler isolation ball valve. Totaline multistage wireless digital setback thermostat. Automatic boiler pressure feed valve, safety backflow preventer. One zone valve control panel, two taco zone valves, two grundfos 3 speed circulators. Wirsbo pex tubing with oxygen barrier

Quote #3 $10869
Same as quote #2 but with a Burnham MPO84 boiler with a beckett oil burner

Quote #4 $10200
Install one Burnham MPO147 with a 40 gallon Amtrol hot water tank and a intellicon Hot water control.
This work includes thermal expansion tank, micro-buibble air scrubber, full-flow isolation valves, easy maintenance manifolds, independent circulator pumps, automatic water feed valve, back-flow contamination valve, low water safety cut-off valve and circulator control center.
This quote does not include removing the second floor piping and creating a separate zone.

Any help or ideas on these quotes would be appreciated

Robert O'Brien

#1

#1.Do a heat loss
#2.Poorly insulated?You can't afford poorly insulated in 2008!
#3. Do the heat loss again after tightening up everything humanly possible.
#4. Use ODR and possibly TRV's with whatever brand boiler you decide on

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jp_2

I agree !!!

trv's, a better bargain than zones.

insulation, your best payback, getting rid of air leak might even be as worthy or more...

Jason_33

heat loss

I did a detailed heat loss using the software I got on this site, lots of measuring the many windows and doors in my house. The Calc I came out with was 96k, so I think the 140k boiler was sized for the indirect hot water requirement and If I went with that installer I would get a smaller tank. I really need to do a second zone upstairs because it is a separate living space (apartment).
the upstairs is heated with three radiators 2 on a loop and one on its own supply and return, for a total of two supply and returns. I was wondering if you could just put the supply lines on there own zone and leave the returns as they are.

Thanks, for all the help and insight.