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Help with boiler pressure
All. Need some insight or advice on my natural gas boiler pressure. I noticed while it is firing to heat it’s very consistent at about 20psi. While hot but idle it rises to about 25psi. Also runs about 25psi if circulating but not firing. This scenario is less consistent as I have noticed it circulate with fire around 20psi. Have never noticed it go aboue 25psi or trip the relief valve. Had it serviced right after we moved in in December and was told everything in good shape. Thoughts?