ᐅ Which air source heat pump meets the requirements set out in the building plan?
Created on: 7 Nov 2020 20:22
K
Krypto83
Hello everyone,
I am getting a bit frustrated.
The development plan includes the following text:
The homebuilder planned a Daikin Altherma 3R with the corresponding outdoor unit (ERGA04DAV3).
However, I am not entirely sure whether it can actually meet the sound pressure level requirements?
Maybe I simply haven’t found the right datasheets yet?
Thank you and best regards
Kristian
I am getting a bit frustrated.
The development plan includes the following text:
Air Source Heat Pumps
Only the installation of air source heat pumps that meet the following requirements is permitted:
The installation of air source heat pumps is only allowed in fully enclosed rooms on all sides.
At all penetrations and openings from the installation room to the outside, it must be ensured through structural and/or technical measures that a sound pressure level of 30 dB(A), measured at 1 meter (3.3 feet) from the penetration or opening, is not exceeded.
When sizing and designing soundproofing enclosures and silencers, it must be ensured that the noise after the silencer has no tonal components and that the installed technical measures provide sufficient noise reduction properties, especially in the low-frequency range below 90 Hz.
The homebuilder planned a Daikin Altherma 3R with the corresponding outdoor unit (ERGA04DAV3).
However, I am not entirely sure whether it can actually meet the sound pressure level requirements?
Maybe I simply haven’t found the right datasheets yet?
Thank you and best regards
Kristian
Hello Andreas,
I have already submitted the development plan to them.
Their statement is that it will only be thoroughly reviewed during the planning meeting, and any necessary changes will be made then.
However, I ran into this issue with the air source heat pump and wanted to clarify it before signing the contract.
Just now, I received an email offering an "Eltron 8 S Trend" air source heat pump, but at a significant additional cost.
Can you roughly estimate the price range for a ground source heat pump?
I understand that drilling costs can vary greatly. It probably depends on the groundwater depth and the soil layers, right?
Thank you for your very helpful response.
Best regards,
Kristian
I have already submitted the development plan to them.
Their statement is that it will only be thoroughly reviewed during the planning meeting, and any necessary changes will be made then.
However, I ran into this issue with the air source heat pump and wanted to clarify it before signing the contract.
Just now, I received an email offering an "Eltron 8 S Trend" air source heat pump, but at a significant additional cost.
Can you roughly estimate the price range for a ground source heat pump?
I understand that drilling costs can vary greatly. It probably depends on the groundwater depth and the soil layers, right?
Thank you for your very helpful response.
Best regards,
Kristian
Hi,
Um, so they want to adjust the house design to fit the development plan only *after* the contract is signed? That’s quite an idea....
I hope you realize that by doing that, you’re basically signing a blank check....
The house should already be basically approval-ready before you sign the contract. Otherwise, they’ve just built in the minimal KfW standard, and you’ll be expected to pay the extra cost for KfW40+, which the building authority unfortunately requires. And since they know you can’t back out of the contract, that cost won’t be just €40,000 but why not €80,000?
Sorry, that’s not acceptable!
When it comes to prices for geothermal heat pumps, I can’t say much — I’ve often seen figures of €10,000 to €15,000 just for the drilling here on the forum, but I have no personal experience. We have a very traditional gas heating system, and I would make the same choice today. It costs about €3,000 compared to around €16,000 that I’ve seen quoted for a heat pump with indoor installation. Annual fuel costs run about €750 for gas. It works...
And if you feel bad about CO2, just skip a weekend trip to Mallorca, which produces roughly the same emissions as a gas heating system over a whole year...
Best regards,
Andreas
Krypto83 schrieb:
Their statement is that this will only be thoroughly reviewed during the planning meeting and corresponding adjustments will be made then.
However, I ran into this problem with the air source heat pump and wanted to clarify it before signing the contract.
Um, so they want to adjust the house design to fit the development plan only *after* the contract is signed? That’s quite an idea....
I hope you realize that by doing that, you’re basically signing a blank check....
The house should already be basically approval-ready before you sign the contract. Otherwise, they’ve just built in the minimal KfW standard, and you’ll be expected to pay the extra cost for KfW40+, which the building authority unfortunately requires. And since they know you can’t back out of the contract, that cost won’t be just €40,000 but why not €80,000?
Sorry, that’s not acceptable!
When it comes to prices for geothermal heat pumps, I can’t say much — I’ve often seen figures of €10,000 to €15,000 just for the drilling here on the forum, but I have no personal experience. We have a very traditional gas heating system, and I would make the same choice today. It costs about €3,000 compared to around €16,000 that I’ve seen quoted for a heat pump with indoor installation. Annual fuel costs run about €750 for gas. It works...
And if you feel bad about CO2, just skip a weekend trip to Mallorca, which produces roughly the same emissions as a gas heating system over a whole year...
Best regards,
Andreas
Hello Andreas,
I do not want to sign this blank check.
That’s why I am currently trying to clarify as much as possible before signing.
We already have a building surveyor who is checking everything so far.
The contract will also be reviewed by a specialized attorney before we sign.
The heating system was originally supposed to be considered later in the heat demand calculation.
I have now brought this forward with reference to the development plan. As far as this goes, the house meets all other requirements from the development plan and our energy efficiency expectations.
Now it was only about the heating system 🙂
Thanks again for your valuable advice.
Now I have more information to continue researching.
Best regards
Kristian
I do not want to sign this blank check.
That’s why I am currently trying to clarify as much as possible before signing.
We already have a building surveyor who is checking everything so far.
The contract will also be reviewed by a specialized attorney before we sign.
The heating system was originally supposed to be considered later in the heat demand calculation.
I have now brought this forward with reference to the development plan. As far as this goes, the house meets all other requirements from the development plan and our energy efficiency expectations.
Now it was only about the heating system 🙂
Thanks again for your valuable advice.
Now I have more information to continue researching.
Best regards
Kristian
Krypto83 schrieb:
So, are there air source heat pumps that are installed indoors and only require a wall opening?Outdoor units, which where they are actually prohibited, are simply recessed behind the exterior wall. Your local planning authority has learned from this cheap trick and now also limits the noise that still radiates in front of the protective grille.https://www.instagram.com/11antgmxde/
https://www.linkedin.com/company/bauen-jetzt/
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