energy-optimizer

# Energy Optimizer ## When to Use **Use this skill when:** - User asks about energy optimizer - User needs guidance on energy optimizer topics - User wants a structured approach to energy optimizer **Do NOT use when:** - Request requires professional consultation beyond educational guidance - User needs emergency assistance ## Overview This skill helps homeowners reduce energy consumption, lower utility bills, and improve home comfort through systematic efficiency improvements. Using the Department of Energy guidelines, ENERGY STAR standards, and building science principles, this advisor walks you through a DIY energy audit and prioritizes improvements by cost-effectiveness and impact. ## Questions to Ask the User First 1. **What type of home?** (Single-family, townhouse, condo, apartment) 2. **How old is the home?** (Impacts insulation, windows, systems) 3. **What region/climate?** (Heating-dominant, cooling-dominant, mixed) 4. **Current monthly energy bills?** (Electric, gas, oil -- averages or last 12 months) 5. **Heating system type?** (Gas furnace, heat pump, boiler, electric baseboard, etc.) 6. **Cooling system type?** (Central AC, heat pump, window units, none) 7. **Water heater type?** (Gas tank, electric tank, tankless, heat pump) 8. **Have you already made any efficiency improvements?** 9. **What's your comfort complaint?** (Drafty, uneven temps, high bills, all of the above) 10. **Budget for improvements?** ($0-100, $100-500, $500-2000, $2000+) 11. **Homeowner or renter?** (Determines what changes are possible) 12. **Are you interested in solar?** (For long-term planning) ## DIY Energy Audit Walkthrough ### Step 1: Utility Bill Analysis ``` UTILITY BILL ANALYSIS: Gather 12 months of utility bills (most utilities have online history). MONTHLY TRACKING: | Month | Electricity (kWh) | Electric ($) | Gas (therms) | Gas ($) | Total ($) | |-------|-------------------|-------------|-------------|---------|-----------| | Jan | ___ | $___ | ___ | $___ | $___ | | Feb | ___ | $___ | ___ | $___ | $___ | | Mar | ___ | $___ | ___ | $___ | $___ | | Apr | ___ | $___ | ___ | $___ | $___ | | May | ___ | $___ | ___ | $___ | $___ | | Jun | ___ | $___ | ___ | $___ | $___ | | Jul | ___ | $___ | ___ | $___ | $___ | | Aug | ___ | $___ | ___ | $___ | $___ | | Sep | ___ | $___ | ___ | $___ | $___ | | Oct | ___ | $___ | ___ | $___ | $___ | | Nov | ___ | $___ | ___ | $___ | $___ | | Dec | ___ | $___ | ___ | $___ | $___ | | TOTAL | ___ | $___ | ___ | $___ | $___ | BASELINE USAGE: The lowest month = your base load (always-on: fridge, water heater, lighting) Highest - lowest = your weather-dependent load (heating/cooling) BENCHMARKING: Average US electricity: ~900 kWh/month, ~$130/month Average US gas: ~60 therms/month (heating season) Your usage vs average: _______________ IF YOUR BILLS ARE HIGH, the audit below will identify where energy is going. ``` ### Step 2: Air Leak Detection ``` AIR LEAK DETECTION (biggest energy waster in most homes): COMMON LEAK LOCATIONS (check all): [ ] Windows -- feel around frames and where glass meets frame [ ] Exterior doors -- check all edges and thresholds [ ] Electrical outlets on exterior walls (remove cover, feel for drafts) [ ] Light switches on exterior walls [ ] Recessed lights (can lights) in insulated ceilings [ ] Attic hatch or pull-down stairs [ ] Plumbing and wiring penetrations (where pipes/wires enter walls) [ ] Dryer vent [ ] Fireplace damper (close when not in use) [ ] Mail slot (if present) [ ] Where siding meets foundation [ ] Around A/C window units [ ] Exhaust fans [ ] Where foundation meets framing (sill plate) DETECTION METHODS: Method 1: INCENSE STICK TEST On a windy day, hold a lit incense stick near suspected leak areas. If smoke blows horizontally or wavers, you've found a leak. Mark each spot with painter's tape. Method 2: HAND TEST On a cold, windy day, slowly move your hand around windows, doors, outlets. You'll feel cold air infiltrating. Method 3: FLASHLIGHT TEST (for exterior gaps) At night, have someone shine a flashlight along exterior edges while you look from outside. Light visible = air leak. Method 4: PRESSURIZE THE HOUSE (advanced) Close all doors, windows, and fireplace dampers. Turn on all exhaust fans (kitchen, bathroom). This creates negative pressure, making leaks easier to detect with the incense or hand method. LEAK SEVERITY RATING: Small gap (< 1/16"): Caulk Medium gap (1/16" - 1/2"): Expanding foam or weatherstripping Large gap (> 1/2"): Backer rod + caulk, or hardware cloth + foam ``` ### Step 3: Insulation Assessment ``` INSULATION CHECK: ATTIC INSULATION: Access attic safely (headlamp, boards to walk on, mask) Measure depth of existing insulation: ___ inches Type: [ ] Fiberglass batts [ ] Blown cellulose [ ] Blown fiberglass [ ] None RECOMMENDED R-VALUES BY CLIMATE ZONE: Zones 1-3 (South): R-30 to R-38 (10-13 inches fiberglass) Zones 4-5 (Central): R-38 to R-49 (13-17 inches fiberglass) Zones 6-8 (North): R-49 to R-60 (17-21 inches fiberglass) Current R-value estimate: ___ Target R-value: ___ Gap: ___ inches more insulation needed NOTE: Attic insulation is the #1 most cost-effective insulation upgrade. Payback period: typically 1-3 years. WALL INSULATION: Hard to check without removing material. Indicators: - Cold interior walls in winter = likely poor insulation - Touch interior of exterior wall: should be room temp, not cold - Check from attic: is the top of exterior walls insulated? - Check from basement/crawlspace: is the bottom insulated? - For definitive answer: professional energy audit with infrared camera BASEMENT/CRAWLSPACE: [ ] Check rim joist area (where floor meets foundation) This is often the biggest uninsulated area. Insulate with rigid foam board or spray foam. R-10 to R-19 recommended. [ ] Basement walls: uninsulated concrete loses significant heat Interior rigid foam or stud wall with fiberglass [ ] Crawlspace: insulated floor above? Encapsulated? Vented? PIPES AND DUCTS: [ ] Hot water pipes in unconditioned spaces: insulate with pipe foam Cost: $1-3 per 6-foot section. Saves $10-20/year on water heating. [ ] HVAC ductwork in unconditioned spaces (attic, crawlspace): Insulate with duct wrap or rigid board Leaky/uninsulated ducts waste 20-30% of heating/cooling energy [ ] Seal duct joints with mastic or metal tape (NOT duct tape) ``` ### Step 4: Window and Door Assessment ``` WINDOW EFFICIENCY CHECK: WINDOW TYPE IDENTIFICATION: [ ] Single pane (pre-1970s, very inefficient) -- R-value ~1 [ ] Double pane, clear glass -- R-value ~2 [ ] Double pane, Low-E coating -- R-value ~3 [ ] Triple pane -- R-value ~5-7 CHECK FOR: [ ] Condensation between panes (seal failure -- window needs replacing) [ ] Drafts around frames (caulk/weatherstrip -- much cheaper than replacing) [ ] Cracked or broken glass [ ] Difficulty opening/closing (may indicate structural shifting) [ ] Missing or damaged weatherstripping COST-EFFECTIVE WINDOW IMPROVEMENTS: (Listed from cheapest to most expensive) 1. Caulk exterior gaps: $5-10 total 2. Add weatherstripping: $3-8 per window 3. Install window film (shrink-fit plastic): $5-10 per window, R-value +1 4. Add cellular/honeycomb blinds: $30-100 per window, R-value +2-3 5. Install storm windows: $50-200 per window 6. Replace windows: $300-1000+ per window (long payback period) IMPORTANT: Replacing windows is almost NEVER cost-effective for energy savings alone. The payback period is 15-30+ years. Do it for comfort, noise, aesthetics, or home value -- but not primarily for energy savings. Fix air leaks around existing windows first (90% of the benefit at 5% cost). DOOR CHECK: [ ] Weatherstripping around frame intact? [ ] Door sweep at bottom? (No daylight visible) [ ] Threshold adjusted properly? [ ] Deadbolt engages smoothly? (Misalignment = gap) [ ] Storm door present? (adds significant insulation value) ``` ## Smart Thermostat Optimization ``` SMART THERMOSTAT GUIDE: RECOMMENDED SETTINGS: Heating Season: When home and awake: 68F (saves significantly vs 72F) When asleep: 62-65F When away (8+ hours): 58-62F Each degree lower saves ~3% on heating bill Cooling Season: When home: 78F (with ceiling fans = feels like 72F) When away: 85F or off When sleeping: 75-78F Each degree higher saves ~3% on cooling bill SMART THERMOSTAT BENEFITS: - Learns your schedule automatically - Adjusts based on occupancy detection - Remote control via phone - Energy usage reports - Integration with utility demand response programs - Estimated savings: 10-15% on heating, 10-15% on cooling TOP PICKS: Ecobee SmartThermostat: Room sensors, Alexa built-in, $200-250 Google Nest: Learning algorithm, clean interface, $130-250 Honeywell Home T9: Room sensors, traditional brand, $150-200 INSTALLATION: DIY difficulty: Beginner-Intermediate Time: 30-60 minutes Need: Existing thermostat wires, C-wire (or adapter) When to call a pro: If you don't have a C-wire and adapter isn't included, or if your system is complex (heat pump + aux heat, multi-zone) OPTIMIZATION TIPS: - Don't supersede the schedule frequently (defeats the purpose) - Use away mode when traveling - Set reasonable setbacks (extreme setbacks use more energy recovering) - Keep furniture and curtains away from thermostat - Lock the thermostat if household members constantly adjust it ``` ## LED Conversion ``` LED LIGHTING CONVERSION: WHY SWITCH: LED vs Incandescent: Energy use: 75-80% less Lifespan: 25,000 hours vs 1,000 hours Heat output: 80% less (reduces cooling load too) Cost per year per bulb (3 hrs/day): ~$1.50 vs ~$7.50 WHOLE-HOME CALCULATION: Number of light sockets in home: ___ Currently incandescent/halogen: ___ Currently CFL: ___ Currently LED: ___ Bulbs to convert: ___ Cost per LED bulb: $2-5 average Total conversion cost: $___ Annual savings: approximately $__ per bulb converted Payback period: ___ months LED SELECTION GUIDE: Brightness: 40W equivalent = 450 lumens (accent, bedside) 60W equivalent = 800 lumens (general room) 75W equivalent = 1100 lumens (reading, kitchen) 100W equivalent = 1600 lumens (workshop, task) Color Temperature: 2700K (Soft White): Warm, like incandescent. Best for living rooms, bedrooms. 3000K (Warm White): Slightly brighter warm. Good for kitchens, bathrooms. 3500K (Neutral): Clean, balanced. Good for offices, laundry. 4000K (Cool White): Bright, crisp. Good for garages, task areas. 5000K+ (Daylight): Very bright, blue-ish. Good for workshops, security. For most homes: 2700K throughout living areas, 3000-3500K in kitchens/baths/offices. DIMMER COMPATIBILITY: Not all LEDs work with old dimmers (may buzz or flicker) Solution: Buy "dimmable" LEDs and if issues, replace dimmer switch with LED-compatible dimmer ($15-25, easy DIY swap) ``` ## Appliance Efficiency ``` APPLIANCE ENERGY USAGE AND EFFICIENCY: TOP ENERGY-CONSUMING APPLIANCES (typical home): 1. HVAC SYSTEM: 45-50% of energy bill Upgrade priority: HIGHEST If replacing: Look for SEER 16+ (AC), AFUE 95%+ (furnace), HSPF 9+ (heat pump) Heat pumps are most efficient option in moderate climates 2. WATER HEATER: 15-20% of energy bill Tank (gas): Look for Energy Factor 0.65+ Tank (electric): Look for Energy Factor 0.95+ Heat pump water heater: 2-3x more efficient than electric tank Tankless: saves 20-30% vs tank, unlimited hot water 3. WASHER/DRYER: 5-10% of energy bill Washer: ENERGY STAR, front-load uses 25% less energy than top-load Dryer: Heat pump dryers use 50% less energy (higher upfront cost) Free savings: Wash in cold water (saves 90% of washer energy) 4. REFRIGERATOR: 5-8% of energy bill ENERGY STAR models: 15-20% more efficient than minimum standard Age matters: A 2005 fridge uses 40%+ more than a 2024 model Maintenance: Clean coils every 6-12 months, check door seal 5. DISHWASHER: 2-4% of energy bill ENERGY STAR: uses 12% less energy and 30% less water Free savings: Run full loads, use air-dry setting ENERGY STAR LABEL: Always look for ENERGY STAR when replacing any appliance. EnergyGuide yellow label shows estimated annual operating cost. Compare operating cost between models (may justify higher purchase price). SHOULD I REPLACE MY OLD APPLIANCE? Calculate: (Old annual cost - New annual cost) x Expected life of new If this exceeds the price difference, replace. Rule of thumb: Replace refrigerators 15+ years old, HVAC 15+ years old. ``` ## Solar Evaluation ``` SOLAR BASICS EVALUATION: IS SOLAR RIGHT FOR YOUR HOME? ROOF ASSESSMENT: Orientation: [ ] South-facing (ideal) [ ] East/West (good) [ ] North (poor) Shading: [ ] No shade [ ] Some shade [ ] Significant shade Roof condition: [ ] Good (15+ years left) [ ] Needs repair/replacement Roof type: [ ] Asphalt shingle (easy) [ ] Tile (possible) [ ] Metal (easy) Available area: ___ sq ft of suitable roof space Rule of thumb: 100 sq ft of roof = ~1 kW of solar = ~1,200-1,500 kWh/year FINANCIAL EVALUATION: Current annual electricity cost: $___ Average system size for your usage: ___ kW Estimated system cost (before incentives): $___ Federal tax credit (30% ITC through 2032): -$___ State/local incentives: -$___ Net cost after incentives: $___ Estimated annual savings: $___ Simple payback period: ___ years Average US payback: 7-12 years System lifespan: 25-30+ years Return on investment: typically 10-20% annually after payback OPTIONS: Purchase outright: Best ROI, you own the system Solar loan: $0 down, monthly payment < current electric bill (ideally) Solar lease/PPA: No upfront cost, lower savings, don't own the system Community solar: No roof installation, subscribe to a local solar farm NEXT STEPS IF INTERESTED: 1. Check your roof suitability (Google Sunroof tool is free) 2. Get 3+ quotes from local installers (EnergySage.com for comparison) 3. Ask about net metering policy in your area 4. Check state and local incentives (DSIRE database: dsireusa.org) 5. Review your HOA rules if applicable ``` ## Rebates and Incentives ``` FINDING ENERGY EFFICIENCY REBATES: FEDERAL INCENTIVES: [ ] Energy Efficient Home Improvement Credit (25C) 30% credit up to $1,200/year for insulation, windows, doors, AC Up to $2,000 for heat pump, heat pump water heater [ ] Residential Clean Energy Credit (25D) 30% credit for solar, battery storage, geothermal [ ] Inflation Reduction Act rebates (income-dependent) Up to $8,000 for heat pump Up to $1,750 for heat pump water heater