Отопление после застройщика-Деньги на ветер 🌬️

What the video is about

• A family buys a house and discovers the heating system was poorly designed/installed by the developers, leaving parts of the home cold—especially the 2nd floor.
• A plumber/installer revises the boiler room, radiator/underfloor connections, and balances the system.
• After years of operation, the original boiler fails due to being run at unsafe/incorrect temperatures, so it is replaced.
• Result: the 2nd floor finally becomes warm.

Key heating system issues described (what went wrong)

Developers’ initial heating setup problems

• 2016 boiler/pipework modernization occurred, but the internal plumbing was inconsistent (e.g., wrong pipe diameters/material choices).
• Underfloor heating was effectively prioritized (described as “direct flow”), causing radiators to stay cold.
• The 2nd floor stayed cold for years; balancing didn’t fix it.
• Low water pressure issues appeared; other parties added/installed incorrect pumping solutions.
• Possible absence/misconfiguration of an expansion tank, contributing to pressure drops.
• Electrical grounding/bonding problems were also addressed (see below).

Temperature evidence

• Thermal imaging/measurements suggest radiator behavior was unrealistic/incorrect, with extremely low effective heating while underfloor remained poorly “alive.”
• Explanation provided: heat was going mostly through the underfloor loop, rather than to the radiators.

Changes made to fix the system (boiler room + piping + balancing)

Boiler room modernization steps (conceptual sequence)

• Reworked piping and changed components to address flow and pressure problems.
• Installed/adjusted:
  • Additional expansion tank (after repeated pressure-drop complaints)
  • Mud collector / dirt separator (“mud trap”) and a filter
  • Air/separator elements and correct shutoff arrangement before/after separator
• Reconfigured the system to reduce faults caused by conflicting pumps and improper routing.

Underfloor heating / manifolds / radiators

• Replaced/added a underfloor heating manifold with flow meters (4 outputs mentioned).
• Redesigned routing so distribution works correctly (pump-mixing unit, balanced flow).
• Reconnected radiators on both floors properly, with focus on priority order:
  • Installer notes the intended behavior should be: radiators first, then underfloor—so underfloor doesn’t “steal” heat.

System balancing targets/settings (as mentioned)

• Set flow rates (example mentioned: around 2 L / two liters).
• Used a thermal head with a remote sensor so the customer could adjust comfort.

Commissioning & results

• After launch and balancing, the customer reported the 2nd floor became warm after ~7 years.
• The story continues later with a boiler failure (next section).

Pressure-drop follow-up and safety lesson

• After about a week (and later a follow-up), pressure continued to drop steadily.
• The boiler was found to be under stress because it had been operating with direct-flow underfloor heating, which requires low temperatures, not high boiler temperatures.
• The boiler was eventually replaced after it “died” despite being only about 7 years old.

Boiler replacement (gas boiler setup)

• The old boiler was dismantled; a new gas boiler was installed (described as Eco, with different output; later mentioned setup to 24 kW).
• A gas technician (“Nikolai” mentioned) adjusted/commissioned burner modulation.
• The video implies constraints related to safety/legal procedure:
  • The narrator says they were not allowed to film the exact adjustment steps/settings.
• Heating startup details:
  • Initially started “on hot water,” then normal flame/operation described.
  • Temperature set around 42° (as stated).

Electrical/grounding and a heated towel rail

Grounding/potential control

• The plumber identified lack of proper grounding potentials control:
  • During construction, shocking of water behind a washing machine using BT current was reported.
  • Grounding with driven pins was later installed after discovering the issue.

Heated towel rail replacement

• A heated towel rail was replaced:
  • Previously described as rotten/failed (stainless rail; seam mentioned).

Water supply / drainage (small mention)

• The plumbing on the washing machine outlet was re-cut/reconnected so it drains into a toilet/VA line arrangement (described with a pipe connection and bends).

Notable locations, products, and people mentioned

Notable locations (home)

• Boiler room (modernized and repeatedly revised)
• 1st floor (radiators + warm floor distribution)
• 2nd floor (originally cold; later warmed)
• Bathroom hallway / kitchen underfloor heating zones

Key equipment/products

• Boilers (old then replaced; new described as Eco, ~24 kW, adjustable modulation)
• Underfloor heating manifolds with flow meters (4 outputs mentioned)
• Mud collector / dirt separator (“mud trap”) and air/sludge separator
• Additional expansion tank
• Pump-mixing unit
• Thermal head with remote sensor
• Heated towel rail (stainless; seam/seamed mentioned)

People

• Main installer/plumber: Alexander
• Gas technician/commissioning: Nikolai