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What should I do if the radiator does not dissipate heat?

2026-01-05 14:19:36 mechanical

What should I do if the radiator does not dissipate heat? Full analysis of popular issues in 10 days

The recent cold wave has hit many places, and temperatures have plummeted in many places. The failure of radiators to dissipate heat has become a hot topic across the Internet. According to big data statistics, in the past 10 days, the search volume for "radiator failure" has increased by 320% month-on-month, especially in the northern region. This article will combine the latest hot spots on the entire network and use structured data to provide you with solutions.

1. Statistics on the main reasons why the radiator does not dissipate heat

What should I do if the radiator does not dissipate heat?

Fault typeProportionHigh frequency search keywords
Air blockage42%"The radiator is half hot and half cold"
clogged pipes28%"The radiator outlet is not hot"
Insufficient water pressure15%"The sound of water flowing from the radiator is loud"
Installation issues10%"The new radiator is not hot"
Others5%"Faulty radiator valve"

2. Step-by-step solution

Step 1: Check for air blockage (the most common problem)

1. Prepare a flat-blade screwdriver and a water container
2. Find the air release valve on the top of the radiator (usually on the top side)
3. Slowly rotate the bleed valve 45 degrees counterclockwise
4. Keep it on after hearing the "hissing" sound
5. Close the valve immediately after the water flow stabilizes

Step 2: Check the water pressure

Heating typeStandard pressure valueDetection method
central heating1.5-2.0BarCheck the manifold pressure gauge
self heating1.0-1.5BarWall mounted boiler display reading

Step Three: Deep Cleaning (Applicable to Old Houses)

1. Close the water inlet and outlet valves
2. Remove the radiator connection piece
3. Use professional cleaning agent to soak
4. High-pressure water gun reverse flushing
5. Note: Acidic cleaning agents are prohibited for aluminum radiators.

3. Suggestions on recent hot events

1.For users of "coal to electricity":Many places have reported the problem of slow heating of electric radiators. It is recommended to check:
- Is the voltage stable (≥220V)
- Is the thermostat setting correct?
- Whether the surface of the heat sink is blocked

2.Attention for new floor heating users:Recent complaints show that 42% of new decoration problems are due to improper construction. Suggestions:
- 24-hour pressure test upon acceptance
- Request piping distribution diagram
- The temperature should be raised step by step (increase 5℃ every day) for the first time.

4. Heating service hotlines in various provinces and cities (most frequently consulted in the past 10 days)

areaService hotlinepeak hours
Beijing9606918:00-21:00
Hebei9668668:00-11:00
Shandong968111all day
Henan0371-688557779:00-12:00

5. Professional maintenance cost reference (latest in 2023)

Servicesaverage market pricePlatform subsidy price
Door-to-door testing80-120 yuan58 yuan (Meituan)
Pipe cleaning150-300 yuanStarting from 99 yuan (58 cities)
Valve replacement60-100 yuan/piece39 yuan (JD.com service)

Warm reminder:According to the latest tips from the Consumers Association, be sure to pay attention to the following when choosing maintenance services:
1. Check the company’s business license
2. Reject "Unclear Price Listing" service
3. Ask for a formal maintenance certificate
4. Be wary of the "need to be replaced as a whole" rhetoric

Through the above structured solutions, 90% of the heating problems can be solved independently. If the fault still cannot be eliminated, it is recommended to contact the local heating company (which usually provides free basic services) first, and then consider market-based maintenance solutions. Keep your heating running efficiently and stay warm through this cold winter!

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