Hello everyone,
We are about to decide which offer to choose from the heating installer!
As always, the quotes and sizing vary widely!!!
A few facts:
Annual primary energy demand targeted at 42.5 kWh/m²a (according to the latest calculation), which is 31.5% better than a new build.
The house will have about 240 m² (2,583 ft²) of heated space, including bedrooms, dressing rooms, hallways, and a basement party room (which will only be fully heated at certain times), so not all areas will be heated equally. In addition to the 240 m² (2,583 ft²), there are about 60 m² (646 ft²) of basement space.
Currently, 2 people are planned to live in the house, but up to 4 people maximum are expected 🙂
The most attractive offer is for a Vaillant flexoCOMPAKT VWF 88/4 with 8.9 kW, a 185 L (49 gallons) domestic hot water tank, and a 50 L (13 gallons) buffer tank.
On the other hand, I received an offer for a Buderus system with over 13 kW, a 390 L (103 gallons) hot water tank, and a 300 L (79 gallons) buffer tank.
We have a “normal” showering habit and rarely take baths, so very large amounts of very hot water are unlikely.
Every opinion counts, the order is to be placed on Friday.
We are about to decide which offer to choose from the heating installer!
As always, the quotes and sizing vary widely!!!
A few facts:
Annual primary energy demand targeted at 42.5 kWh/m²a (according to the latest calculation), which is 31.5% better than a new build.
The house will have about 240 m² (2,583 ft²) of heated space, including bedrooms, dressing rooms, hallways, and a basement party room (which will only be fully heated at certain times), so not all areas will be heated equally. In addition to the 240 m² (2,583 ft²), there are about 60 m² (646 ft²) of basement space.
Currently, 2 people are planned to live in the house, but up to 4 people maximum are expected 🙂
The most attractive offer is for a Vaillant flexoCOMPAKT VWF 88/4 with 8.9 kW, a 185 L (49 gallons) domestic hot water tank, and a 50 L (13 gallons) buffer tank.
On the other hand, I received an offer for a Buderus system with over 13 kW, a 390 L (103 gallons) hot water tank, and a 300 L (79 gallons) buffer tank.
We have a “normal” showering habit and rarely take baths, so very large amounts of very hot water are unlikely.
Every opinion counts, the order is to be placed on Friday.
S
Sebastian7920 Apr 2016 07:32Did you have the Vaillant system inspected and approved?
According to HB, yes... unfortunately, I wasn’t present for that. I also don’t know if it happened in person or over the phone.
The times I dealt with Vaillant customer service were not exactly highlights either... keyword "well" instead of "ground probe" and the heating load calculation (incorrect heat transfer value as the basis).
The times I dealt with Vaillant customer service were not exactly highlights either... keyword "well" instead of "ground probe" and the heating load calculation (incorrect heat transfer value as the basis).
S
Sebastian7920 Apr 2016 07:44You should now have a sticker and a service booklet from Vaillant – the inspection is a requirement for the 5-year warranty.
You didn’t take advantage of Vaillant’s incentive program, did you?
Regarding the system layout: there are, of course, many variations, but a buffer tank was always included – either the much-disliked large one in the supply line or the safety buffer in the return line. However, this should not affect efficiency – it just costs a few euros (approximately 400 euros) and I had to agree to it due to the warranty conditions.
You didn’t take advantage of Vaillant’s incentive program, did you?
Regarding the system layout: there are, of course, many variations, but a buffer tank was always included – either the much-disliked large one in the supply line or the safety buffer in the return line. However, this should not affect efficiency – it just costs a few euros (approximately 400 euros) and I had to agree to it due to the warranty conditions.
S
Sebastian7920 Apr 2016 07:51The inspection must take place within 4 weeks after installation – at least that's what I understand.
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