Hi everyone,
we are building a small solid house with a general contractor. Originally, the plan was to have a gas boiler with a controlled ventilation system.
Now that we finally have an installer assigned, he told us there is no space for controlled ventilation!
This is quite short notice since the excavator is already on site, and digging for the foundation will probably start on Monday.
The general contractor has presented us with the following options:
Option 1:
- Gas condensing boiler with solar thermal system
(Photovoltaic system does not make sense here!)
Requirements:
o Flue pipe (either on the exterior wall or in the cloakroom niche)
o Buffer tank
o Expansion vessel
o Condensing boiler
o Piping for solar system up to the roof
Requires a lot of space
Option 2:
- Gas condensing boiler with ventilation (just sufficient for energy saving regulation calculations)
(Photovoltaic system does not make sense here!)
Requirements:
o Flue pipe (either on the exterior wall or in the cloakroom niche)
o Buffer tank
o Expansion vessel
o Condensing boiler
o Ventilation system (ceiling-mounted)
Basically no space available
Option 3:
- Air-to-water heat pump with ventilation
(Photovoltaic system can be added later – empty conduit to the roof)
Requirements:
o Buffer tank
o Expansion vessel
o Outdoor unit for air-to-water heat pump
o Ventilation system (ceiling-mounted)
o 10cm (4 inches) build-up in the sloped roof area needed for ventilation ducts
Option 4:
- Air-to-water heat pump without ventilation
(Energy saving regulation compliance is technically not a problem, but mechanical ventilation should possibly be ensured by e.g. window frame ventilation)
(Photovoltaic system can be added later – empty conduit to the roof)
Requirements:
o Buffer tank
o Expansion vessel
o Outdoor unit for air-to-water heat pump
Unfortunately, the additional costs for these options have not been communicated to us.
We are currently leaning towards option 4, but we are quite uncertain about these window frame ventilation solutions...
Have a nice Sunday
Marvin
we are building a small solid house with a general contractor. Originally, the plan was to have a gas boiler with a controlled ventilation system.
Now that we finally have an installer assigned, he told us there is no space for controlled ventilation!
This is quite short notice since the excavator is already on site, and digging for the foundation will probably start on Monday.
The general contractor has presented us with the following options:
Option 1:
- Gas condensing boiler with solar thermal system
(Photovoltaic system does not make sense here!)
Requirements:
o Flue pipe (either on the exterior wall or in the cloakroom niche)
o Buffer tank
o Expansion vessel
o Condensing boiler
o Piping for solar system up to the roof
Requires a lot of space
Option 2:
- Gas condensing boiler with ventilation (just sufficient for energy saving regulation calculations)
(Photovoltaic system does not make sense here!)
Requirements:
o Flue pipe (either on the exterior wall or in the cloakroom niche)
o Buffer tank
o Expansion vessel
o Condensing boiler
o Ventilation system (ceiling-mounted)
Basically no space available
Option 3:
- Air-to-water heat pump with ventilation
(Photovoltaic system can be added later – empty conduit to the roof)
Requirements:
o Buffer tank
o Expansion vessel
o Outdoor unit for air-to-water heat pump
o Ventilation system (ceiling-mounted)
o 10cm (4 inches) build-up in the sloped roof area needed for ventilation ducts
Option 4:
- Air-to-water heat pump without ventilation
(Energy saving regulation compliance is technically not a problem, but mechanical ventilation should possibly be ensured by e.g. window frame ventilation)
(Photovoltaic system can be added later – empty conduit to the roof)
Requirements:
o Buffer tank
o Expansion vessel
o Outdoor unit for air-to-water heat pump
Unfortunately, the additional costs for these options have not been communicated to us.
We are currently leaning towards option 4, but we are quite uncertain about these window frame ventilation solutions...
Have a nice Sunday
Marvin
B
boxandroof24 Feb 2019 22:54M4rvin schrieb:
The ceiling height should actually be around 2.60 meters (8 feet 6 inches), but if the ceiling needs to be thicker because of the controlled residential ventilation system... We’ll see what the general contractor has to say tomorrow!
The wardrobe fits perfectly in the bedroom!
I can’t quite imagine the floor right now... Just a hole with a grate in the floor? A wall there would probably look better.
Do you think a controlled residential ventilation system makes sense here? Or would a single-room ventilation system and trickle vents in the window be better? It really seems like the house isn’t designed for controlled residential ventilation!You have to decide that for yourself. Personally, I would probably choose a floor grate if necessary rather than having no controlled residential ventilation at all, or alternatively ventilate the main rooms with decentralized systems (try them out yourself beforehand and choose). It’s possible without controlled residential ventilation, but then with gas heating you’d need solar thermal systems again, which don’t add comfort – that would be unfortunate.
As a last resort, there are also active ventilation options through valves without heat recovery using central exhaust, but that is rarely used nowadays – however, it may be better than uncontrolled ventilation through trickle vents in windows.
M4rvin schrieb:
A wardrobe fits perfectly in the bedroom! Where? And what size? A 3-meter (10 feet) wardrobe really needs to fit in the bedroom; anything less won’t do. Two meters (6.5 feet) for two people, one meter (3.3 feet) for the family laundry.
M4rvin schrieb:
The ceiling height should actually be around 2.60 meters (8 ft 6 in), but if the ceiling has to be thicker because of the mechanical ventilation system... Let’s see what the general contractor has to say tomorrow!
The wardrobe fits perfectly in the bedroom!
I can’t really picture the floor right now... Just a hole with a grate in the floor? A wall there would look nicer.
Do you think a mechanical ventilation system makes sense here? Or would a single-room ventilation system with trickle vents on the windows be better? It really seems like the house isn’t designed for a mechanical ventilation system! But you do know that with the floor construction you’ll end up somewhere between 2.43 m and 2.48 m (8 ft to 8 ft 2 in) finished floor height, depending on the thickness of the insulation!?
In our case, the mechanical ventilation system is also mounted on the ceiling—above the heat pump. It works well! The room is packed with equipment, but it functions perfectly!
On the upper floor, two rooms have floor grilles. Stylish, simple stainless steel grilles. The rooms with drywall partitions have ventilation grilles installed in the walls.
Before giving up on mechanical ventilation, I would definitely set it up this way! I was a bit skeptical at first, but it really adds a great deal of comfort!
On the upper floor, two rooms have floor grilles. Stylish, simple stainless steel grilles. The rooms with drywall partitions have ventilation grilles installed in the walls.
Before giving up on mechanical ventilation, I would definitely set it up this way! I was a bit skeptical at first, but it really adds a great deal of comfort!
You are all now trying to square the circle. Space is tight. Think small and choose a gas boiler plus solar thermal hot water. This is the most compact solution and works perfectly. Use the money saved for window frame vents and exhaust fans in the bathrooms. If there is still some budget left, install a nice awning on the terrace.
Similar topics