FAQs – Frequently Asked Questions

  • How can I make an appointment?

    🗓️ This is how you book an appointment with us!

    Appointments can be made via WhatsApp or by phone:


    📲 Here's how it works via WhatsApp: Simply send a message, answer the short query and select your preferred date - done.


    📞 Here's how it works by phone: Call us directly and tell our virtual assistant Petra your preferred appointment time.


    ✅ You will receive confirmation of your appointment.

    ⏰ Optional: If you wish, we will remind you before your appointment.


  • How much are the service costs?

    📊 The answer depends on the type of system – you can find an overview of our performance costs here 🔍.

  • What exactly is done during heating maintenance?

    We take care of all safety-relevant components 🔒:

    ✅ Testing of burners, heat exchangers and water-carrying parts

    ✅ Exhaust gas measurement according to VDMA 24186

    ✅ Replacement of wearing parts

    🧽 Cleaning, ⚙️ setting of operating parameters and 🔍 safety checks are of course included.

  • How do you carry out heating maintenance to optimize energy efficiency?

    We focus on maximum energy efficiency during every maintenance 🔋:

    We carefully check all components and optimize the settings so that your system runs as economically and environmentally friendly as possible 🌱.

  • How do you coordinate appointments with property managers?

    We work closely with property management companies and can coordinate maintenance appointments for multiple properties. Our experience with larger residential complexes allows us to create and implement efficient maintenance plans.

  • How often should heating maintenance be carried out?

    ✅ Once a year before the heating season is ideal!

    Our heating technology experts 🔧 recommend the period April to September 🗓️.

    Regular maintenance can increase energy efficiency by up to 15% 💡 and prevent up to 80% of heating failures 💪🔥.

  • How often does my district heating transfer station need to be serviced?

    District heating transfer stations should be serviced annually. Since many buildings are supplied with district heating, proper maintenance of the transfer stations is particularly important for supply security.

  • What types of heaters do you service?

    We are your expert for all heating systems 🌟 – whether gas, oil or heat pump ♻️.

    Our trained technicians are experts in condensing technology, hybrid solutions and intelligent control systems 💡.

    We even take care of older systems carefully and professionally 🧑‍🔧👩‍🔧.

  • What types of heating systems can you service?

    We specialize in the maintenance of gas systems, oil systems, and heat pumps. Our technicians are experienced in working with a wide range of systems and brands.

  • Do you offer emergency services for heating problems?

    Yes, we offer an emergency service that can be integrated into our maintenance contracts to respond quickly and effectively to urgent problems.

  • How long does a typical heating maintenance take?

    ⏱️ A standard heating maintenance usually takes between 1 and 3 hours, depending on the condition and type of the heating system 🔧.

  • What distinguishes Peter Knebel Haustechnik from other heating maintenance providers?

    Our uncomplicated and individual contract processing 📝, fast processing times ⚡ and our expert, solution-oriented team 🤝 make us a preferred provider for heating maintenance in the Frankfurt area and surrounding areas 📍.

  • What does a standard heating maintenance include?

    Our standard heating maintenance includes:

    ✅ Testing of water quality and pressure 💧

    ✅ Adjust the water pressure if necessary

    ✅ Visual inspection of all connections and the burner 🔍

    ✅ Replacement of wearing parts (e.g. burner seals, electrodes)

    ✅ Cleaning the heat exchanger 🧽

    …and much more for a permanently efficient heating system 🌡️.