Hello everyone,
We are currently building a house and are generally quite satisfied with the construction company. I have already asked a few questions here about the heating system and so on. In the contract, I had it specified that a heat demand calculation according to DIN 12831 should be carried out.
Now, after selecting the fixtures and finishes, I received a calculation according to DIN 4701 (Energy Saving Ordinance 2009).
I still feel on the safe side since everything is documented in writing. What puzzles me now is—shouldn’t the heat demand calculation be done soon? Is the construction company making things difficult for themselves?
We decided beforehand on a geothermal heat pump with brine and heat recovery in a KfW 55 house. Assuming it turns out to be insufficient—what would happen then? (It’s clear that it would either be cold or expensive.) Could it be that we might have to pay a lot more if the heating is undersized? Or am I worrying too much?
Best regards and many thanks,
We are currently building a house and are generally quite satisfied with the construction company. I have already asked a few questions here about the heating system and so on. In the contract, I had it specified that a heat demand calculation according to DIN 12831 should be carried out.
Now, after selecting the fixtures and finishes, I received a calculation according to DIN 4701 (Energy Saving Ordinance 2009).
I still feel on the safe side since everything is documented in writing. What puzzles me now is—shouldn’t the heat demand calculation be done soon? Is the construction company making things difficult for themselves?
We decided beforehand on a geothermal heat pump with brine and heat recovery in a KfW 55 house. Assuming it turns out to be insufficient—what would happen then? (It’s clear that it would either be cold or expensive.) Could it be that we might have to pay a lot more if the heating is undersized? Or am I worrying too much?
Best regards and many thanks,
YvesB schrieb:
Side question: How do I even find a good MEP planner? This is a valid question and not easy to answer. There are plenty of MEP planning firms, but most focus on large-scale projects. Consequently, the overhead costs and subsequent expenses tend to be higher. In addition, the conditions and experience needed for smaller single-family homes are quite different. Also, MEP planning strictly following HOAI (German fee structure for architects and engineers) for a single-family home is hardly affordable and, in my opinion, not necessary. It is usually sufficient to clarify the main critical points.For new construction planning, regional affiliation is not required. For example, I have planned systems in Austria without ever meeting the client or architect in person.
For existing buildings, the situation is quite different. An on-site inspection is usually, but not always, essential.
Best regards,
PS: If you have any questions, feel free to send an email directly or a private message.
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