Free tools Windows power users keep installed
One-click scans. No signup required.
Start with demand, not a new appliance. Set heating to the lowest comfortable temperature, schedule it for occupied hours, reduce hot-water use, and stop avoidable draughts today. Then arrange an energy audit and maintenance visit to find insulation or equipment problems. Those steps cut gas consumption regardless of the tariff; a heat pump or other replacement system can reduce exposure to future gas-price swings, but only after a property-specific comparison of installation cost, electricity prices, insulation and electrical capacity.
Wholesale gas is only one part of a delivered bill. Distribution, network charges, taxes, policy costs, operating costs, risk allowances and VAT or sales tax also apply. Consequently, a 10% fall in gas use will not necessarily produce a 10% fall in the bill. Your tariff, standing charges, weather, occupancy and local regulation determine the result.
As an Amazon Associate I earn from qualifying purchases.
What a wholesale-price rise changes on your bill
Suppliers buy gas in wholesale markets and recover that commodity cost through retail tariffs. The U.S. Energy Information Administration (EIA) describes a residential bill as the gas commodity plus distribution, taxes and fees. In the United Kingdom, Ofgem lists wholesale purchasing, network, policy, operating, earnings, risk and VAT components. Only the wholesale component moves directly with the market.
Pass-through also depends on the tariff and the date. Ofgem’s standard-variable price cap is reset every three months. The UK government attributed about 80% of the increase between the first- and second-quarter 2025 cap levels to higher wholesale gas prices. On 23 May 2025, Ofgem said lower wholesale prices accounted for about 90% of the July-to-September 2025 cap reduction. Those are UK observations for specific cap periods, not a universal percentage for every country, supplier or fixed-rate plan.
#1 Best Overall
- 【Notice】Please make sure to read the installation and wiring instructions provided in the pictures carefully before buying. If you are inexperienced with installation, it is advised to be cautious when making a purchase to avoid issues like product failure or incompatibility. (Verify the existing base to ensure only 2 to 5 wires are compatible for installation and wiring).
- 【Thermostat Applications 1H/1C】for with Conventional Single-Stage Heating & Air Conditioning, up to 1 Heat and 1 Cool. Gas/Oil/Electric Furnace (Heat only), Boiler Radiant (Heat only), Furnace Forced-Air (Heat Only), Gas Fireplace (24 Volts), Cooling Only, Only 1H/1C Heat Pump (without aux) Systems.
- 【Incompatible Systems】Does not work multistage systems (1H/2C, 2H/2C), HVAC heat pump systems (2H/1C, 4H/2C), PTACs, 3-wire hydronic (hot water), dual fuel/hybrid heating. Does not work line voltage systems (120-240V electric baseboards heat); mini split heat pump air conditioner, RV air conditioners mach and roughneck series.
- Suuwer S705 5-1-1 day programmable thermostat 1 Heat/ 1 Cool. Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, return and sleep.
- 【Technical support】 Separate heat or cool swing set up (0.2°F to 2°F) and 5 minute compressor delay protection (Selectable ON or OFF). Digital thermostat has a built-in battery change and filter change reminders (Set 50-2000 hours)
Because non-energy charges remain, the most dependable response is to reduce the amount of heat and hot water your home needs. Gas savings begin immediately when controls change; bill savings appear at the next meter reading or billing period and vary with the tariff.
What to change today
Lower the thermostat without making rooms unsafe or uncomfortable
- Write down the current setpoint and the times the heating normally runs.
- Reduce the setpoint to the lowest temperature that keeps occupants comfortable. Australian Government household guidance gives 18°C–20°C as a winter range; adapt it to your climate, health needs and building rather than treating it as a mandatory target.
- Lower the setting during sleep and whenever rooms are empty. A programmable thermostat or the schedule function already built into many controls can do this automatically. Check wiring and equipment compatibility before replacing a thermostat.
- Change one setting at a time and observe comfort for several days. Do not disable frost protection or allow vulnerable rooms and pipes to become dangerously cold.
Australian guidance estimates that each additional heating or cooling degree can increase energy use by 5%–10%. That estimate is for its household context, so the exact response in your home will differ. The practical principle is robust: heating an empty house wastes fuel.
Keep heat where people use it
- Close doors between heated and unheated areas.
- Close off unused rooms where the building and heating system allow it, while keeping enough background heat to prevent condensation, frozen pipes or damage.
- Move furniture, curtains and drying laundry away from radiators, convectors and warm-air registers so heat can circulate.
- Reduce obvious draughts around movable windows and doors with removable seals or adjusted latches. Do not block permanent ventilation grilles, combustion-air openings or flues.
Cut hot-water demand immediately
- Take shorter showers. Australian Government guidance uses a four-minute target and recommends a compatible low-flow showerhead.
- Repair dripping hot taps and insulate accessible hot-water pipes where the appliance manual and local safety rules permit.
- Run dishwashers and washing machines with full loads and the lowest suitable temperature; avoid using hot water to rinse when cold water is adequate.
Hot water is a substantial load even when space heating is off. DOE Federal Energy Management Program guidance puts water heating at 14%–25% of household energy consumption; Australian guidance uses about 25% as a household estimate. The share in your home depends on the number of occupants, climate and appliance.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Prioritise heating, because it is often the largest gas load
DOE Federal Energy Management Program guidance says heating can account for almost half of an average family’s winter energy bill. That makes thermostat schedules, room zoning and heat-loss control the quickest places to look when gas prices rise. A small change maintained throughout the heating season can matter more than a rarely used efficiency feature.
Use schedules and zoning deliberately
Set heating periods around actual occupancy rather than a fixed early start. If a home takes a long time to warm, advance the start only enough to reach comfort at wake-up; do not run the system all night merely because recovery takes time. Use separate room controls where available, but avoid closing so many valves or registers that the boiler or furnace cannot operate within its design limits. Ask a qualified technician about minimum-flow requirements if you are unsure.
Do not confuse a warmer thermostat with faster heating
Setting a thermostat much higher does not make most systems heat a room proportionally faster; it mainly keeps the system running longer. Choose the desired temperature directly. Keep internal doors open only where you want heat to spread, and close them where you are intentionally limiting a zone.
Rank #2
- PRIVACY PROTECTION*: Sensi won’t sell your personal information to third parties
- EASY DIY INSTALLATION: Use the built-in level and step-by-step app instructions for a quick installation. Works with HVAC equipment found in most homes. Common wire (c-wire) is not required in most applications
- SAVE ABOUT 23% ON HVAC ENERGY*: The ENERGY STAR-certified Sensi smart thermostat can help you save energy with features like flexible scheduling, remote access and usage reports
- SIMPLE CONFIGURATION: Looks and feels like a thermostat. Has buttons and fits the same space as a traditional thermostat so you don’t have to patch and paint your walls
- SMART MAINTENANCE: Sensi can help monitor the performance and efficiency of your HVAC system by delivering valuable usage reports, alerts about your equipment, and maintenance reminders like filter replacement
Reduce water-heater losses safely
Check the temperature setting
For storage water heaters, DOE guidance recommends a warm setting of 120°F, or about 49°C, where that setting is appropriate for the appliance and household. Lower settings can reduce standby and water-heating losses, but follow the manufacturer’s instructions and local rules. People at increased risk from waterborne illness, or homes with recirculation and hygiene requirements, should obtain professional advice before changing a setting. Prevent scalding at taps used by children or vulnerable adults.
Consider an insulating blanket only when approved
The U.S. Environmental Protection Agency (EPA) reports that an insulating blanket can reduce a storage water heater’s heat loss by 25%–40%. This is a general heat-loss estimate, not a guaranteed percentage reduction in the whole household bill. DOE says such a blanket can pay for itself quickly in suitable cases.
- Read the water-heater manual or the manufacturer’s label to confirm that a blanket is permitted.
- Do not cover the thermostat, control panel, pressure-relief valve, drain, burner area, flue, ventilation openings or electrical connections.
- For a gas-fired appliance, keep the blanket clear of the top, combustion chamber and exhaust path exactly as the manual specifies.
- Secure the blanket without compressing insulation around controls, then check that all safety devices remain accessible.
EPA also reports that turning down the thermostat can cut water-heating costs by 6%–10%. That figure concerns water-heating costs in its guidance, not total household spending, and should not be added to the space-heating savings estimate.
Find and fix heat loss before buying equipment
Get an energy audit
EIA recommends a home energy audit to identify reductions beyond thermostat changes. An auditor should examine the building envelope, air leakage, insulation levels, heating and hot-water equipment, controls and ventilation. Ask for prioritised measures with estimated cost, expected energy effect, safety implications and maintenance needs rather than a list of products.
Inspect the places homes commonly lose heat
- Loft or attic: look for thin, compressed, wet or missing insulation and gaps around hatches, pipes and cables. Maintain required ventilation and safe clearances around electrical equipment and flues.
- Cavity walls: confirm that the wall construction is suitable and dry before filling. Poorly designed work can move moisture into the building fabric.
- Windows and doors: repair failed seals and fit draught control where it does not interfere with emergency egress or permanent ventilation.
- Exposed pipes and ducts: insulate accessible sections where condensation, freezing and clearance requirements have been assessed.
Ofgem identifies cavity-wall and loft insulation as relatively low-cost measures that can improve heat retention and lower bills. Actual savings depend on the starting condition, climate, floor area, occupancy and workmanship. Use qualified contractors for work that affects combustion appliances, wiring, moisture control or structural elements.
Recommended Free Tools
Ventilation is not a draught to seal blindly
Air-sealing can reduce uncontrolled heat loss, but combustion appliances need adequate air and homes need controlled ventilation to manage moisture and indoor pollutants. Never cover a permanent vent or seal around a flue without a competent assessment. If occupants notice soot, unusual smells, headaches or a carbon-monoxide alarm, leave the building and follow local emergency and appliance-safety procedures.
Rank #3
- · High Compatibility: Forced air (gas, oil or electric), Electric furnace, Hot water steam or gravity radiant heat, Heat only systems, Heat pump w/o auxiliary or emergency heat, Millivolt, Gas fireplaces (24V), Floor or wall furnaces, Cool only systems.(TIP: Before purchasing, check to see if this thermostat is compatible with your system.)
- · Not Compatible: Heat pump with auxiliary or emergency heat, Dual fuel/hybrid heating, Electric baseboard heat (110-240 volts), Line voltage, Convectors, Radiant-ceiling heat, Mini split systems and 12V RV systems.
- · Easy to Install and Use: Large terminal blocks with universal sub-base, can be installed within 30 minutes, Large, clear, easy-to-read backlight LCD display and easy controls make for a user-friendly experience.
- · Factory Pre-set Energy-efficiency Program: 7-day, 5/1/1 easy-to-understand programming menus, flexible programming lets you sync your comfort with your schedule.
- · Reliability: Made by professional manufacturer and backed by over 20 years of experience, the customer service is 7*24 hrs available.
Service the existing boiler, furnace or heat pump
DOE/FEMP recommends professional maintenance each year and advises looking for a high-efficiency, independently certified model when replacing equipment. Follow the manufacturer’s service interval if it is more frequent. A service should address burners or heat exchangers, filters, controls, condensate drains, pumps, safety devices and flues as applicable. Replace filters at the stated interval; a blocked filter can restrict airflow and increase run time on forced-air systems.
Ask the technician to record combustion or performance checks, fault codes, operating temperatures and any parts approaching end of life. Correcting a failing sensor, pump, valve, fan or seal may save gas sooner and cost less than a premature full replacement. Do not remove covers or adjust gas pressure yourself.
Compare the main options by cost, speed and risk
Every option trades immediate savings against disruption and capital cost. Gas reduction and bill reduction are related but not identical: an electric replacement may use no gas while its bill depends on electricity prices, standing charges, taxes and the tariff.
| Option | Gas-use effect | Speed of effect | Up-front cost and disruption | Checks before proceeding |
|---|---|---|---|---|
| Thermostat setback and occupancy schedule | Reduces space-heating demand during lower-temperature or unoccupied periods | Immediate | Usually free if existing controls support it | Comfort, frost protection, pipe safety and thermostat compatibility |
| Shorter showers and low-flow showerhead | Reduces hot-water volume and the energy used to heat it | Immediate after behavior or fixture change | Low cost; minor installation work | Thread and flow compatibility, pressure and user comfort |
| Draught control | Can reduce uncontrolled air leakage | Immediate to short term | Low cost for movable doors and windows | Keep required ventilation, flues and emergency exits clear |
| Loft/attic or cavity-wall insulation | Reduces heat loss through the building envelope | After installation | Contractor cost and possible disruption | Moisture risk, construction type, clearances and qualified installation |
| Water-heater blanket | Reduces standby heat loss from a suitable storage tank | After installation | Low to moderate cost | Manufacturer approval; keep controls, vents and safety devices exposed |
| High-efficiency gas appliance | Uses less gas for the same delivered heat when correctly sized and commissioned | After replacement | Significant equipment and installation cost | Whole-life cost, flue, condensate, controls, warranties and local rules |
| Heat-pump water heater or air-source heat pump | Can greatly reduce or eliminate gas use for the served loads | After design and installation | High capital cost and household disruption | Insulation, heat emitters, outdoor space, electrical capacity, noise, installer competence and electricity tariff |
When a heat pump makes sense
Ofgem says heat pumps can reduce exposure to volatile gas and oil prices. Its Boiler Upgrade Scheme guidance explains that a heat pump can produce several units of heat for each unit of electricity, but performance and running cost depend on the property, system design, insulation and the relative prices of electricity and gas. A certified installer should provide a property-specific performance estimate; no universal bill saving can be promised.
Prepare the property first
- Identify and address major draughts and inadequate insulation before sizing the system.
- Check whether radiators or other heat emitters can deliver required heat at the lower water temperatures commonly used by heat pumps. Some may need replacement or resizing.
- Confirm an outdoor unit location with adequate airflow, drainage, noise separation and access for service.
- Check the electrical supply, consumer unit, meter arrangement and any planned tariff changes.
- Obtain a heat-loss calculation and seasonal performance estimate, not a generic output based only on floor area.
Compare total cost, not just fuel prices
Set the expected annual electricity cost, remaining gas or standing charges, maintenance, financing, equipment life and likely incentives beside the installed price. Include the cost of emitter upgrades, electrical work, hot-water cylinders and controls. A heat pump may be attractive as insurance against gas volatility even where its first-year bill is uncertain, but that is a capital and risk decision rather than a guaranteed saving.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Replacement choices for hot water and space heating
When an appliance reaches the end of its service life, compare these routes with a qualified designer:
Rank #4
- An Alexa thermostat - Amazon Smart Thermostat is an easy way to switch from a traditional thermostats for homes and help reduce energy usage.
- Create comfort zones throughout your home by connecting to select Alexa devices to automatically adjust heating and cooling based on temperature readings or presence detection.
- Save money and energy - After purchase, Amazon will send you an email with details about home thermostat rebates that may be available from energy providers in your area.
- Save energy - According to EPA estimates, ENERGY STAR certified thermostats save an average of $90 on yearly energy bills.
- Programmable thermostat and automatic control - Create your own home, away and sleep schedules, or have Alexa automatically control the temperature with Alexa+ advanced features.
- High-efficiency gas replacement: generally the least disruptive like-for-like route where gas service remains reliable, but it retains exposure to wholesale gas prices and future network or policy changes.
- Electric resistance water heating: can remove gas from water heating and may have a lower installation complexity, but its running cost depends directly on the electricity tariff and the amount of hot water used.
- Heat-pump water heater: can use substantially less electricity than resistance heating, yet needs suitable space, airflow, condensate management and a correct cylinder or tank arrangement.
- Air-source heat pump for space heating: can reduce gas dependence across the home, but needs a heat-loss calculation, suitable emitters, outdoor space, electrical capacity and a competent installation.
Use locally available incentives only after checking their current eligibility, value and installation requirements. Programs, price caps and installer availability change. Do not make a long-term equipment decision from a rebate advertised for a different region or date.
A practical timetable
Today
- Record your meter reading, tariff, current thermostat settings and occupancy schedule.
- Set heating periods to occupied hours and lower the temperature when rooms are empty.
- Close unused-room doors, clear radiators or vents and reduce safe, obvious draughts.
- Shorten showers and fit a compatible low-flow showerhead if needed.
- Check that no ventilation grille, flue or combustion-air opening has been blocked.
This month
- Book the manufacturer-specified service for the boiler, furnace or heat pump.
- Arrange a home energy audit and request a ranked plan with costs and safety notes.
- Inspect loft or attic, cavity-wall and exposed-pipe insulation; obtain qualified quotations where work is needed.
- For a storage water heater, verify blanket approval and the safe clearance of every control and vent before installation.
- Review bills and meter data against weather and occupancy rather than comparing one unusually warm or cold month.
Before replacing equipment
- Ask for a room-by-room heat-loss calculation and an equipment-sizing explanation.
- Compare at least one efficient gas option with electric resistance and heat-pump alternatives for the loads you actually serve.
- Price electrical upgrades, emitters, cylinders, controls, commissioning and future maintenance, not just the main unit.
- Confirm installer certification, warranty terms, service arrangements and any current local assistance.
- Get a written, property-specific estimate of seasonal energy use and assumptions about gas and electricity prices.
Measure whether a change is working
Keep a simple log of meter readings, indoor temperature, heating hours, hot-water use and weather. Compare equivalent periods, such as two weeks with similar outdoor temperatures, rather than a warm October with a cold January. Smart-meter half-hourly data can reveal whether heating runs while everyone is away, but do not treat a supplier’s estimated reading as measured consumption.
Separate gas volume from money. A bill can rise after a successful gas reduction if the unit rate, standing charge, taxes or billing period changed. Conversely, a lower bill during warm weather does not prove that an insulation project delivered its expected effect. Ask the supplier to correct estimated readings and verify the tariff whenever the bill appears inconsistent with meter data.
Common mistakes and how to avoid them
- Expecting the wholesale fall to appear immediately: fixed tariffs and regulated caps pass through changes on their own schedules.
- Turning the thermostat up to heat faster: this usually extends run time instead of accelerating warm-up.
- Sealing every vent: combustion and moisture safety take priority over draught reduction.
- Installing insulation without a moisture assessment: unsuitable wall or roof work can create damp and decay.
- Covering a water-heater control or flue: a blanket is safe only on an approved model with all clearances maintained.
- Buying an oversized boiler or heat pump: incorrect sizing can increase cycling, cost and wear.
- Assuming lower gas use equals the same percentage bill reduction: electricity, standing charges, taxes and tariff rules still apply.
- Choosing an installer on price alone: poor commissioning can erase the expected efficiency and create safety or warranty problems.
What to do if your gas supply may be phased out
A planned network change or government gas phase-out should prompt early advice rather than an emergency replacement. Ask the network operator or local authority about timing, acceptable technologies, electrical upgrades and support. The European Commission notes that assistance may include home assessments, heating advice, installation guidance and building-wide solutions, depending on location. The details are local and can change, so verify them before committing money.
The decision in one sentence
Cut heating and hot-water demand first, seal and insulate only where it is safe, service what you own, and use an audit plus a property-specific total-cost comparison before replacing gas equipment. That sequence delivers the fastest dependable reduction while preserving the option of electrification when the building and tariff make it worthwhile.
Quick wins for a faster PC:
Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
