Anyone a bit better researched fancy offering some opinion on this. I'll lay out my understanding:
All 3 gas reg number, all 3 good reviews on google, yelp, checkatrade.
Situation 40 year old boiler, looking to get rid of tanks and go to combi. Currently the 22mm supply pipe is reduced to 15mm somewhere, this then feeds the current boiler. Boiler and supply are on opposite ends of the house, supply front, boiler back in the kitchen. 6.5m-7m straight run.
Would like gas hobs as part of the works.
Quote 1: Guy says no idea where it's reducing, so he'll run 22mm up to the loft, then down to the kitchen. This is good for the 27w baxi platinum he quoted, and the rings.
Quote 2: Same mention of no idea where it's reducing 22>15mm. So he wants to run 28mm to the loft, then down to the kitchen to cover rings and a 30kw baxi 830.
Quote 3: "i've done a house 1 road down same design, the 22 runs to the kitchen, so we'll rid of the 15 and run 22 off the 22 to the new boiler, tap off that for the rings" only installs glowworm boilers.
Now I didn't really like how all 3 pulled the specs out of the air on the spot, when it's my basic understanding that run lengths, bends and elbows etc make a big difference if sticking to 22mm (assume thats a big reason quote 2 returned 28mm).
All 3 were in the range 2.7(22mm)-2.9k(28mm)
Both new pipe installers wanted to run gas pipe up the front of the house, which isn't the dream.
Can any one educate me and provide some thoughts on a direction here, it'd obviously be easier if the 22mm is in the kitchen, and has the capacity to do a 30kw boiler + a gas hob.... But nobodys filled me with confidence!
All 3 gas reg number, all 3 good reviews on google, yelp, checkatrade.
Situation 40 year old boiler, looking to get rid of tanks and go to combi. Currently the 22mm supply pipe is reduced to 15mm somewhere, this then feeds the current boiler. Boiler and supply are on opposite ends of the house, supply front, boiler back in the kitchen. 6.5m-7m straight run.
Would like gas hobs as part of the works.
Quote 1: Guy says no idea where it's reducing, so he'll run 22mm up to the loft, then down to the kitchen. This is good for the 27w baxi platinum he quoted, and the rings.
Quote 2: Same mention of no idea where it's reducing 22>15mm. So he wants to run 28mm to the loft, then down to the kitchen to cover rings and a 30kw baxi 830.
Quote 3: "i've done a house 1 road down same design, the 22 runs to the kitchen, so we'll rid of the 15 and run 22 off the 22 to the new boiler, tap off that for the rings" only installs glowworm boilers.
Now I didn't really like how all 3 pulled the specs out of the air on the spot, when it's my basic understanding that run lengths, bends and elbows etc make a big difference if sticking to 22mm (assume thats a big reason quote 2 returned 28mm).
All 3 were in the range 2.7(22mm)-2.9k(28mm)
Both new pipe installers wanted to run gas pipe up the front of the house, which isn't the dream.
Can any one educate me and provide some thoughts on a direction here, it'd obviously be easier if the 22mm is in the kitchen, and has the capacity to do a 30kw boiler + a gas hob.... But nobodys filled me with confidence!