Frequently Asked Questions - AC Heating and Cooling

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Running air conditioning in Portugal is generally more affordable than many people expect. Costs depend on the size of the unit, how energy-efficient it is, and how often it’s used. Modern systems, such as inverter technology units, are highly efficient and consume far less electricity than older models. On average, a standard unit might add between €30–€60 a month to your electricity bill during peak summer, depending on usage. When properly sized and regularly serviced, air conditioning is one of the most cost-effective ways to stay comfortable in the Algarve climate.

The “$5000 rule” is a guideline used mostly in the United States to decide whether to repair or replace an air conditioning system. You multiply the age of the unit (in years) by the estimated repair cost. If that number is greater than $5000, it usually makes more financial sense to replace the unit rather than repair it. For example, if your 10-year-old system requires a €600 repair, the result is €6000, which means replacement is the smarter long-term choice. While this rule comes from the U.S., the principle applies in Portugal too: after about 10–12 years, a new, efficient system can often save more in energy costs and reliability than repairing an older unit.

Two hours of air conditioning can cost as little as €0.30–€0.80, depending on the energy efficiency of the system and the price of electricity at the time. A 9,000 BTU inverter unit, for example, typically consumes between 0.6–0.9 kWh per hour. With Portugal’s electricity rates averaging €0.20–€0.25 per kWh, this makes cooling or heating your room for a couple of hours surprisingly economical. The key is choosing the right size unit for the space and using it smartly, such as keeping windows closed and filters clean.

Air conditioning is not standard in most Portuguese homes, particularly older properties that were built before cooling systems were common. Many houses rely on natural ventilation, thick stone walls, or shading to stay cool in summer. However, with rising temperatures and modern expectations, more homeowners and buyers are installing air conditioning systems, especially in the Algarve and other southern regions. Today, new builds and renovated properties often come with pre-installation or fully fitted systems, and adding AC to existing homes has become a very common upgrade.

Many clients save 60–80% on water heating costs each year by switching to solar, depending on household size and hot water usage.

Not necessarily. Modern air conditioning units are designed to be energy efficient, especially when used properly and matched to the size of the space.

Yes. We install Bosch thermosiphon solar hot water systems (200L and 300L tanks) across the Algarve, helping homeowners cut energy costs and make use of the region’s abundant sunshine.

Algarve Air & Solar offers a wide range of HVAC services, including installation, maintenance, and repair of heating, ventilation, and air conditioning systems for both residential and commercial clients.

To keep your HVAC system running efficiently, it's important to have it serviced at least once a year. However, if you have an older system or if you use it frequently, you may want to have it serviced more often. Call us today to book your service. 

Yes, Algarve Air & Solar offers 24/7 emergency HVAC services for clients who need immediate assistance with their heating or cooling systems. Contact us on 929290743.

Some units can be noisy, but most modern systems operate quietly, especially split systems with the compressor placed outside.

Yes. We remove outdated boilers or cylinders and replace them with modern, efficient solar systems designed for Algarve homes.

Air conditioning works by removing heat from inside your home and releasing it outside. Warm indoor air is pulled in and passed over cold coils filled with refrigerant. The refrigerant absorbs the heat, cooling the air, which is then blown back into the room. The heated refrigerant is pumped outside, where it releases the heat and cools down again. This cycle repeats to maintain your set temperature.

Your air conditioning might not be cooling due to a dirty filter blocking airflow. Low refrigerant levels can also stop the system from cooling properly. Another common issue is a faulty thermostat giving incorrect temperature readings. If the outdoor unit is dirty or not running, it can’t release heat efficiently. It’s best to book a professional inspection to find and fix the problem quickly. Contact us today if your system is not cooling sufficiently. 

Yes, air conditioning does remove humidity from the air. At Algarve Air & Solar, our systems are designed to cool your home while also reducing excess moisture. As warm air passes over the cold evaporator coils, humidity condenses and drains away, leaving the air drier and more comfortable. In particularly humid areas of the Algarve, we may recommend additional solutions like dehumidifiers for maximum comfort. With proper sizing and regular maintenance from our team, your system will manage both temperature and humidity effectively.

Yes. At Algarve Air & Solar, we install, service, and repair air conditioning across the Algarve, including Tavira, Olhão, Faro, Loulé, and surrounding areas. If you’re searching for “air conditioning near me”, our local team is ready to help.

With proper servicing, most air conditioning systems last between 10 and 15 years. The Algarve’s hot summers mean units work hard, so regular maintenance is key to extending their lifespan.

We do both. Our technicians repair all major brands of AC units, and if a system is beyond repair, we can recommend an efficient replacement with a full guarantee.

Running costs vary by pool size and whether a pool cover is used. On average, homeowners spend €70–€120 per month in summer and €200–€350 per month in winter without a cover.

Yes. With the right heat pump and a pool cover, swimming is possible year-round. Many clients enjoy heated pools from March through December.

Not when properly installed. Modern underfloor systems are energy-efficient and use low running temperatures, making them cost-effective compared to traditional heating

All of our products and installations come with a three-year guarantee, ensuring peace of mind for every client.