Replacing 90 year boiler

clammy

Since your chimmey is unlined and will need to be lined why not save that coin and put it to good use with standing ci rads a reset controller and a modulating condensing boiler would be ideal .The new buderus gb142 or a htp munchkin would most likely reduce you fuel comsumpition more so then a liner and mid eff unit ,why not try the find a pro link ?good luck and peace clammy

Dan Miller_2

Our house was built in 1914 and is heating with cast-iron rads and the original cast iron boiler that once used coal, oil and now natural gas. Both the gas conversion burner and the gas hot water heater are rentals and both vent through an unlined chimney. Our HVAC calcs show the capacity should be around 80 MBH.

We are building an addition to the house want to replace the boiler with a new one. Every heating contractor seems to have his preferred choice but none seem to agree so we're not sure how to proceed.

One contractor with a good reputation only installs mid-level efficiency burnham or weil-mclain boilers and install an indirect tank for hot water. A liner would be added to the chimney to vent the boiler.

Another thinks we should purchase a high efficiency condensing boiler (viessmann vitodens or NTI trinity) and add an indirect water tank.

The last one thinks we should go to a combination boiler/tankless domestic hot water like the Baxi Luna or NTI Trinity.

We don't have that much of a demand for hot water but I would like to be able to have two showers running at the same time.

We're planningon staying 10+ years at this house so I'm leaning towards a condensing high efficiency boiler ut I mostly want a boiler that will work well with our existing rads and be reliable.

I'd appreciate any advice,

Dan

Ken_8

Dan,

As Calmmy wrote, your best bet is to use the "Find A Professional" link up at the top of this page. Stick in your zip code and get a few phone numbers.

Most of us do not charge for estimates. If you're in north Jersey, I'd be honored. If not, try the zip search. If you can get two or three guys to respond, I assure you the suggestions of these listed guys will be head and shoulders above the typical yellow page scan.

Let us know how you make out.

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Steamhead

Is this

a steam or hot-water system?

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Dan Miller_2

The heating system is hot water, not steam.

Unfortunatly the "Find A Professional" did not find anyone in my area. I will look into the Buderus BG142 and Munchkin (T80 or T80M?) and see who has some experience installing these.

Is the consensus opinion to go with an indirect DHW tank instead of a "on-demand" tankless DHW?

Ted_9

All good ideas. Think about Buderus, De Dietrich and Viessmann boilers. You dont have to go condensing. But, if you have OVER sized cast iron rads, you may be able to lower your design temp and use the outdoor reset to save you on paying the gas company so much.

Please note, I love the Buderus GB142, but it's not rated as a boiler yet so it may not pass inspection.

PATRIOT HEATING & COOLING, INC.

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Ted_9

If you want to draw 2 showers and something else, go with the indirect.

PATRIOT HEATING & COOLING, INC.

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