Why Smart Marbella Property Owners Choose All Three Systems Together
Solar panels alone produce electricity — but if your villa still heats with oil or gas, you're selling cheap electricity to the grid while buying expensive fossil fuel. A heat pump alone is efficient — but you still pay electricity bills. Airzone alone lets you heat individual rooms — but it saves less without an efficient central system. Combining all three eliminates electricity bills, oil deliveries, gas charges and inefficient single-zone heaters — all at once.
How the 3 Systems Work Together
Each is good on its own. Together, they're transformational.
1. Solar PV
Rooftop panels generate 12,000–18,000 kWh per year on the Costa del Sol — enough to power your entire home including heating, cooling, hot water and EV charging.
2. Heat Pump (Aerotermia)
Replaces your gas or oil boiler with a single system delivering heating, cooling and hot water. Runs on your solar electricity — 3–5 kWh of heat for every 1 kWh consumed.
3. Airzone Multi-Zone
Control each room independently from your phone. Save an additional 30–40% by only heating or cooling the rooms you actually use. Essential in larger villas.
The Costa del Sol Project That Sets the Standard
10-Year Investment & Savings Breakdown
Typical 250m² Costa del Sol villa — real numbers, no false promises
Upfront Investment
10-Year Savings
Why This Combination Wins
Solar alone = slow payback
If you sell solar electricity to the grid at €0.08/kWh but buy it back at €0.28/kWh, payback takes 10–12 years. Self-consumption with a heat pump reduces that to 5–7 years.
Heat pump alone = you still pay bills
A heat pump replaces gas/oil but still consumes 5,000–8,000 kWh of electricity per year. Without solar, that's €1,500–€2,400 in electricity bills annually.
Airzone alone = limited by your central system
Airzone is excellent — but if your central system is inefficient (old boiler, low-efficiency AC), savings are capped. Combined with heat pump + solar, the savings multiply.
All three together = energy independence
Generate your own electricity, use it for efficient heating/cooling, and control every room. That's as close to zero electricity bills as a villa owner can get in Spain.
"My electricity bill dropped from €480/month to €130. The system pays for itself."
— Villa owner, Nueva Andalucía
Property Value Impact
New Spanish regulations penalise properties with low EPC ratings. Properties with combined solar + heat pump installations typically achieve EPC A or B. The jump from EPC C to EPC A typically adds €20,000–€35,000 to resale value on a €500,000 villa — on top of the €42,000 saved on bills over 10 years.
Why Agua Therm
Single all-in-one installer
One team installs solar, heat pump and Airzone — no coordinating multiple contractors, no finger-pointing when something fails.
Premium brands only
Daikin, Mitsubishi, Johnson Controls, Deye, Airzone — we install only equipment with manufacturer-backed warranty.
Costa del Sol coverage
Marbella, Estepona, Mijas, Fuengirola, Benahavís, Nueva Andalucía, Puerto Banús, Sotogrande.
English-speaking team
Honest advice in plain English for overseas property owners. No pressure, no surprises.
Frequently Asked Questions
Agua Therm does not process subsidies — we are installers
IDAE grant applications, IRPF tax deductions, and IBI/ICIO rebates must be processed by you or an independent specialist subsidy company. Agua Therm will provide all the installation documentation you need (invoices, installation certificate, technical specs) for your application.
See our list of verified specialist companies
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