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"not happy with my service usually because of price"

If they got what they paid for, the price was right. I would let you do my work.

Sorry, Heat Transfer Products did not make GlowCore boilers. In fact we bought some of the first indirect-fired-water heaters from HTP to make the first condensing boiler/indirect package in the...

I appreciate your knowledge and experience. It is true that many of the early fin-tube systems (then trying unsuccessfully to compete with emerging forced air, were short of radiation.

One point...

Sorry, Heat Transfer Products did not make GlowCore boilers. In fact we bought some of the first indirect-fired-water heaters from HTP to make the first condensing boiler/indirect package in the...

Almost perfect.

Except, the by-pass, or primary/secondary (P/S) pumping is required to keep minimum flow through the low-mass heat exchanger used by most condensing boiler manufacturers. The...

Glowcore. Though HeatMaker was also available at the time.

"It is a new style of boiler that is more efficient because it transferrs more energy you paid for into your home as heat."

I installed my first low-mass, PVC vented 91% efficiency condensing...

Weil McLain provides factory training specifically for their condensing boiler line as do most of the manufacturers of condensing high efficiency boilers. One should ask if the contractor they intend...

Check the static system pressure. Most should be at 12 psi depending on the height of the home.

Have a professional come out to purge air from the system and confirm that it was installed properly.