Are your electrical wiring "aging"? Electrical safety self-inspection and update guide for old apartments

Walking in the alleys of Taipei and New Taipei, you can see apartment buildings over 30 or 40 years old everywhere. These houses carry many memories, but the invisible "vessels" in the walls - electrical wiring and pipes - may be aging quietly and becoming unexploded bombs for home security. According to statistics from the Fire Department of the Ministry of Interior over the years, electrical factors have long been the top cause of building fires in Taiwan, and short circuits and aging of distribution lines are one of the main causes. This is not alarmist, but a reality that every resident of an old house must face. ### Wires also have a lifespan: Why are wires in old houses particularly dangerous? Electrical wires used in buildings (PVC insulated wires) are not permanently durable. Under normal use conditions, its safe service life is generally consideredto be. Beyond this age, the insulation skin will gradually harden, become brittle, or even crack due to long-term thermal expansion, contraction, and air oxidation. Once the insulation is damaged and the copper wires inside are exposed, it will easily cause short circuit, flashover, and ignite surrounding combustible materials. Electricity hazards in old apartments are often caused by the following factors: 1. : Thirty or forty years ago, household electricity might only include lamps, fans, and televisions. Nowadays, every household has air conditioners, microwave ovens, dishwashers, multiple computers and mobile phone chargers. The electricity consumption has increased several times. The wire diameter (thickness of the wire) back then was simply unable to bear the load, causing the wires to be under high load and overheating for a long time, accelerating aging. 2. : Old electrical boxes may only have 2-3 fuseless switches, and the circuit division is rough. Carrying too many sockets on one circuit can easily overload it. What's even more dangerous is that the amperage of the switch may not match the thickness of the wire. When the wire overheats, the switch will not trip and lose its protective effect. 3.: In the early years, construction standards or material quality may not have been as stringent as they are today, and problems may become more apparent after decades. ### Ten warning signs! Self-test whether your home’s electrical wiring is “crying for help” You don’t have to be a plumber to detect that the electrical wiring system may have a red light from signs in your daily life: 1. : This is the most direct warning of overload or short circuit of the system. 2. : Absolutely dangerous! Immediately stop using electrical appliances on this circuit. 3. : Indicates that the copper inside the socket has aged and its elasticity is fatigued. Poor contact will produce high heat. 4.: Especially when starting high-power appliances (such as air conditioners). 5.. 6.. 7.. 8., unable to be grounded. 9.. 10.. If any of the above items appear, especially the first 3, please be vigilant and consider asking a professional to check. ### What is being done on the electrical wiring renewal project? Understand the key points at once The so-called "whole-room cable replacement" is not as simple as removing the old cable and replacing it with a new one. A circuit renewal project that meets modern safety standards should include the following key points: 1.: A qualified electrician will plan enough independent circuits based on your home appliance configuration. For example: kitchen sockets and air conditioners in each room should be dedicated circuits. This is the basis of safety and convenience. 2. : Replace old switches and upgrade them to new ones with higher safety. And according to the newly planned circuit, configure a sufficient number of switches with the correct amperage. The main switch should have the function of earth leakage circuit breaker (ELCB). 3. : Replace all old wires with new wires that comply with CNS standards (such as 2.0mm single-core wire for lamps, 3.5mm² stranded wire or 5.5mm² stranded wire for sockets and air conditioners). 4. : Replace with a new three-hole socket with a safety shield and ensure "grounding" is completed. This is the easiest part of many old projects to cut corners, but it is crucial to preventing electric shock. 5. : Reserve dedicated lines for water heaters and large kitchen appliances. ### Project Budget and How to Choose Reliable Vendors In Taipei and New Taipei, the cost of updating the electrical wiring in an old apartment will vary greatly depending on the condition of the house, the number of square meters, the number of circuits, and the degree of replacement (whether it includes lamp wires and the number of sockets). For an ordinary 20-30 square meter apartment, the cost may fall between. When obtaining a quotation, be sure to ask the master to list the items in detail (wire brand and specifications, switch brand and model, number of sockets, number of circuits, etc.) to avoid future disputes. When choosing a manufacturer, please follow the following principles: - : Prioritize the search for qualified electrical appliance contractors or masters with "Type A Electrician" or "Type B Electrician" certificates. - : A master who is willing to take the time to understand your living habits, home appliance configuration, and explain the plan is usually more trustworthy. - : Ask friends and family for recommendations, or read online reviews. -: Request a written quotation, indicating specifications and brands of materials used. Wires are the nervous system of the house, invisible but a matter of life and death. For an old house, a thorough circuit check and update is an expense, but it will bring you peace of mind and convenience for the next ten or twenty years, and it is the most practical investment in your family's life and property. Don't wait for the power to trip or smell something burnt before taking action. Prevention is always better than remedy.

New knowledge on air conditioning power consumption and Taiwan climate maintenance regulations in recent years (2025-2026 current situation)

With the high temperatures in summer breaking historical records and the adjustment of electricity price structure in recent years, the latest statistics from the Energy Administration of the Ministry of Economic Affairs show that air-conditioning equipment accounts for more than 47% of residential electricity consumption in summer. Many people mistakenly believe that if the air conditioner is not cold, they only need to "replenish the refrigerant." However, in fact, refrigerant is not naturally consumed during normal operation in a closed circuit. If the refrigerant is insufficient, it means that there are micro leaks in the copper pipes or joints. Simply replenishing the air conditioner will only treat the symptoms but not the root cause. Refrigerant leakage will aggravate the high temperature overload of the compressor and shorten its service life.

According to Taiwan's standard operating specifications for air-conditioning projects, it is recommended that professional technicians with a refrigeration and air-conditioning decoration technician license perform "full machine high-pressure water washing and evaporator deep sterilization" every 1 to 2 years for detached air-conditioning indoor units. Especially in the humid summer in the Shuangbei Basin, the air drum and water collection tray are easy to breed black mold and jelly-like biofilm. This is also the main reason for the sour smell in the air-conditioning outlet and the backflow of the drainage pipe. Regular maintenance can maintain CSPF (Air Conditioning Seasonal Performance Factor) level one energy efficiency level, which can save an average household 15% to 20% of air conditioning electricity bills every year.

Autonomous simple maintenance vs professional maintenance safety red line

• Homeowners can do by themselves: Remove and clean the nylon filter regularly every 2 to 3 weeks (rinse with clean water and dry in a cool place, do not expose it to the sun to avoid deformation and embrittlement); clean the air outlet blades of the indoor unit with a dry cloth; check whether there is any accumulation of debris within 50 cm around the outdoor unit that hinders heat dissipation.
• Professional technicians must be entrusted according to regulations: Refrigerant pressure testing and leakage repair welding, high-pressure cleaning of indoor unit air drums and aluminum fins with liquid chemicals, reset of the drainage slope of hidden cold water pipes in the ceiling, and 220V dedicated power circuit configuration and leakage circuit breaker replacement.