Frequently Asked Questions

We install and service across Bengaluru and nearby cities (Mysuru, Hosur, Tumakuru). For larger projects and dealer partnerships we work across Karnataka, Tamil Nadu, Kerala, Andhra Pradesh and Telangana.

Yes. Our expert visits your property, checks roof space, water quality, pressure and usage, and recommends the right system with a clear quote — at no cost.

We are an authorised dealer/distributor for Kamal Solar, Racold, USHA, Grundfos and Pentair, and also supply Paive and Sharp pumps and rainwater harvesting filters.

Yes. We handle the PM Surya Ghar subsidy application and BESCOM net-metering paperwork end-to-end.

Yes. We offer annual maintenance contracts and on-call service for solar heaters, rooftop solar, heat pumps, softeners, RO plants and pumps.

Yes. We regularly design systems for apartments, gated communities, hotels, hostels, hospitals, schools, offices and factories.

Visit our Dealership & Franchise page and submit the application form. Our partnerships team will contact you to discuss your territory.

Most residential installations are completed within 2–7 days of order confirmation, subject to stock and approvals. Solar net metering depends on BESCOM timelines.

For homes, an on-grid system typically costs about ₹55,000–₹70,000 per kW before subsidy, depending on panel type, structure height and inverter brand. A 3 kW home system often costs ₹1.7–2 lakh, and after the ₹78,000 central subsidy the net cost comes down significantly. Call us for an exact quote after a free site survey.

Under PM Surya Ghar Muft Bijli Yojana, residential consumers get ₹30,000 per kW for the first 2 kW and ₹18,000 for the 3rd kW — a maximum of ₹78,000 for 3 kW and above. Group housing societies / RWAs can get ₹18,000 per kW for common facilities. Subsidy rules are set by MNRE and may change; we confirm the latest at the time of booking.

On-grid systems shut down during a grid outage for safety. If you want power during cuts, choose a hybrid or off-grid system with batteries.

Roughly 80–100 sq ft of shadow-free roof per kW. A 3 kW system needs about 250–300 sq ft.

Yes. Apartments can install solar for common loads such as lifts, pumps, lighting and STP — and benefit from the RWA subsidy. We also install for individual penthouses and duplexes.

Typically 2–6 weeks depending on documentation and BESCOM sub-division workload. Talwin handles the application, feasibility and meter replacement process for you.

Yes. All our inverters come with Wi-Fi / app monitoring so you can see daily, monthly and lifetime generation on your phone.

Solar panels carry a 25–30 year performance warranty and inverters 5–10 years, depending on the model. Structure and workmanship warranties are also provided.

Yes. The insulated tank stores hot water for 24–48 hours, and the electric backup heater gives you hot water when the sun is weak.

Plan for about 35–50 litres per person per day. A 100 LPD heater suits 2–3 people, 150 LPD for 3–4, 200 LPD for 4–5 and 300 LPD for 6–8 people. Use our sizing calculator below or ask our team.

If you use borewell or hard water, FPC is better because ETC tubes scale up quickly. For soft Cauvery water and budget installations, ETC works very well.

Yes. We check your rooftop and install safely on flat RCC or sloped roofs, with proper structure and anchoring.

15–20 years with basic maintenance. FPC collectors typically last longer than glass tubes.

You can save 60–80% of your water heating bill. For a family of four using an electric geyser daily, that is often ₹800–₹1,500 a month.

Yes. We install individual systems for penthouses/villas and centralised systems with ring-main circulation for apartment blocks.

There is currently no central capital subsidy for solar water heaters for homes, but BESCOM has historically offered a rebate on electricity bills for homes with solar water heaters. We'll guide you on current benefits.

Yes. It uses ambient air, not sunlight, so it works 24×7 and in all seasons. Bangalore's mild climate is ideal for heat pumps.

It uses up to 70% less electricity than a traditional electric geyser for the same amount of hot water.

Yes. Heat pumps are compact and can be installed on balconies, utility areas or terraces in apartments, villas and buildings with limited space.

Depending on capacity, a full tank heats in about 1–3 hours. Output ranges from 120 LPH to 500 LPH per unit.

With proper use and annual service, 10–15 years.

For families and buildings using more than 100 litres of hot water a day, yes — it pays back the higher upfront cost quickly through lower bills.

If you have good roof space and sunlight, solar is cheapest to run. If you live in an apartment, need hot water at night, or have no roof access, choose a heat pump — or combine both with a hybrid system.

No. It works purely on water flow and gravity.

Rarely — it is self-cleaning. A quick check every 2–3 months and before the monsoon is enough.

Yes. It filters up to 1500 litres per minute, enough for heavy monsoon downpours on roofs up to 500 m².

Yes, for many properties. BWSSB rules require rainwater harvesting for larger existing sites and new buildings above the notified plot size, and non-compliance can attract a penalty on the water bill. Check the latest BWSSB notification or ask us.

Absolutely. It keeps silt and leaves out of recharge pits so they don't clog.

Rainwater is naturally soft, but for drinking it should pass through a purifier (RO/UV) after this filter. The filter makes it clean enough for storage, bathing, gardening and washing.

Price depends on your roof size and number of downpipes. Call or WhatsApp us for a free quote.

Yes. Our pumps work with overhead tanks, sumps, borewell and municipal supply.

No — Talwin takes care of full installation, plumbing changes and setup.

For 3–6 bathrooms, a Grundfos SCALA2 or equivalent smart booster is ideal. For larger buildings, a multistage pump with a pressure tank. We recommend after a site visit.

Yes. A booster pump increases flow in low-pressure bathrooms, especially on the top floor directly below the overhead tank.

Modern pumps like SCALA2 run below 47 dB — quieter than a normal conversation.

Smart variable-speed pumps only run as fast as needed, so typical household consumption is low — usually a few units per week.

You get clean water from every tap without multiple small filters, and all appliances and fittings are protected.

Yes. It removes salts, sand, iron and chemicals from borewell, tanker or city water. We test your water first.

Yes. We install systems for individual flats, whole buildings and gated communities.

No. It needs periodic filter/membrane changes and sanitisation, which we cover under AMC.

It depends on capacity (LPH), input water TDS and stages required. Share your water test or book a free site check for an exact quote.

Well-maintained systems last 10+ years; membranes are typically replaced every 1–3 years depending on water quality.

Yes — from 1 to over 10 taps, based on your footfall and usage.

Yes. Models are available with hot, cold, normal or any combination.

Yes. Our dispensers can connect directly to RO filters or we can supply an integrated RO + cooler.

Yes. We use food-grade SS-304 and SS-316, which is hygienic, rust-free and easy to clean.

Yes. We deliver, install and provide full service and AMC across Bangalore.

White marks on taps, dry skin, rough hair, faded clothes and poor soap lather are common signs. We can do a quick water hardness test for you.

Yes. Bathroom softeners treat only one outlet. Whole-house softeners treat all water at the main pipe.

Very little — refill salt every few months and get an annual service. We support all service needs in Bangalore.

Yes. Our softeners are designed for Bangalore's hard borewell and tanker water. For very high TDS or iron, we add pre-treatment.

No — a softener removes hardness only. For high TDS use RO; for iron use an iron removal filter.

It depends on capacity, water hardness and type (bathroom vs whole-house). Contact us for a quote.

With proper care, 7–10 years or more.

Alkaline water has a slightly higher pH (8.5–9.5) and added minerals, so it is less acidic and tastes smoother than plain RO water.

Yes. Our alkaline filters fit most RO and UV systems.

Mildly alkaline, mineralised water in the 8.5–9.5 range is widely consumed daily. If you have a medical condition, consult your doctor.

Typically 6–12 months depending on usage and input water quality.

Yes — most users find it smoother and fresher than plain RO water.

No. Carbon filters remove chlorine, taste, odour and organic chemicals. For iron, use a dedicated iron removal filter or softener.

Yes, where odour or chemical contamination is present. For best results combine it with a sediment filter or iron filter based on water quality.

Typically 6–12 months depending on water quality, flow rate and usage.

No. Use a UV purifier or RO system along with your carbon filter for microbial safety.

Many cartridge models are plug-and-play. Whole-house systems need professional installation, which Talwin provides.

Sanitary, hardware and electrical store owners, plumbing & electrical contractors, solar installers, builders' suppliers, and entrepreneurs who want to start a solar & water solutions business.

Karnataka, Tamil Nadu, Kerala, Andhra Pradesh and Telangana. Availability depends on existing partners in your district — apply to check.

It depends on the partnership model and territory — referral partners need no stock investment, while dealers and distributors invest in display and stock. We share a clear plan after understanding your location and goals.

Yes. Product, sales, installation and service training is provided, along with technical support for site surveys and large projects.

Partners receive enquiries generated from their territory through our website and marketing, in addition to support for their own local promotion.

Solar water heaters, rooftop solar, heat pumps, water softeners, RO plants, carbon & alkaline filters, pressure pumps, rainwater harvesting filters and SS water dispensers.

Yes. We service most major brands of solar water heaters, rooftop solar, heat pumps, softeners, RO plants and pumps.

Scheduled preventive maintenance visits, cleaning/descaling, performance checks, priority breakdown support and discounted spares. Comprehensive plans can include specified spares.

AMC customers in Bengaluru get priority scheduling — typically within 24–48 hours.

Yes. We offer building-wide AMC covering central RO plants, softeners, pumps, solar and hot water systems.