Warm Water, Green Living
Your Trusted Solar Water Heating Experts
Installing efficient solar water heating systems, giving South African homes reliable hot water, lower costs, and a smaller environmental footprint.
Custom System Design
Every property is unique, so we begin with a detailed assessment of your space and usage. Our experts then design a custom solar water heating system that maximises efficiency, ensures reliable hot water, and saves you money.
Professional Installation
Our experienced team manages the full installation with precision and care, using only SABS-approved solar collectors and geysers. From secure roof mounting to seamless plumbing integration, we ensure a safe, durable system built to the highest standards.
System Upgrades & Maintenance
We provide upgrades and maintenance to keep your system running efficiently. From routine servicing to repairs and replacements, our technicians ensure reliable performance and a longer lifespan for your investment.
Geyser Conversions
Want to cut costs without replacing your geyser? We offer professional conversions that turn your existing electric geyser into a solar-powered unit—an affordable step into sustainable living.
Hot water powered by the sun,
not your wallet.
Geyserwise Control System Assistance
Cut your electricity bills and say goodbye to cold showers. From fixing error codes and faulty sensors to optimising settings and teaching you how to get the most out of your unit, our experts make sure your geyser runs smarter, lasts longer, and delivers hot water exactly when you need it. With professional repairs, smart programming, and hands-on guidance, we’ll help you enjoy reliable hot water, lower costs, and peace of mind—all while boosting energy efficiency and sustainability.
Our Best Projects
Innovative Designs, Timeless Impact: Our Latest Architectural Endeavors
Maple Grove Homes
A cozy development of 15 single-family homes nestled among mature maple trees, offering a perfect blend of natural beauty.
Greenwood Commons
A modern complex of 30 eco-friendly houses along the riverside, featuring shared green spaces and a community boathouse
Parkview Place
A boutique collection of 10 luxury condominiums overlooking the city’s central park, offering premium amenities and panoramic views.
What our customers are saying
Here’s what people think about Solar Energy Assist
Christine Clark
CEO of Skyline
Ona Architecture’s community-first approach set them apart. They listened to residents’ concerns and incorporated our feedback at every stage. The resulting community center has become the heart of our neighborhood.
Sarah Chen
Horizon Properties
Ona Architecture transformed our vision into reality with their innovative sustainable design approach. Their attention to detail and commitment to environmental consciousness resulted in a building that not only looks stunning but also achieved LEED Platinum certification.
Marcus Rodriguez
Metropolitan Council
Working with Ona Architecture on our downtown revitalization project was a game-changer. Their ability to blend modern design with historical preservation created a perfect harmony that has revitalized our city center.
Emily Weber
Tech Innovations
The team at Ona Architecture designed our new headquarters with incredible vision. They created a space that perfectly reflects our company culture while maximizing productivity and employee well-being. The result is simply breathtaking.
Heat your water, not your bills
From assessment to installation, we’re with you every step of the way. Ready to save on energy costs? Contact us today for a free consultation and take the first step toward solar hot water.
25+ Years of Excellence
1,564+ Satisfied Clients
50 Industry Awards
